Sotah 45b ~ Talmudic Embryology

As we approach the end of Sotah, we turn our attention to a new topic: theories of embryonic development, and compare talmudic views with those of modern science. Here is what today's page of Talmud - daf yomi - has to say on the topic:

סוטה מה, ב

מהיכן הולד נוצר מראשו וכן הוא אומר ממעי אמי אתה גוזי ואומר גזי נזרך והשליכי וגו' אבא שאול אומר מטיבורו ומשלח שרשו אילך ואילך

From where is the fetus formed? From its head, as the verse says (Ps.71:6): "From my mother's womb you pulled me out (gozi)". And it says later (Jeremian 7:29) "Pull out (gozi) your hair and throw it away.." [This second verse shows that the verb goz is used to describe the head. So the verse from Psalms must also refer to the head. According to Rashi the verse in Psalms should be read as "You formed me from my head."] Abba Shaul says that the fetus is created from its navel, and from there it sends out roots in all directions. (Sotah 45b)

Embryonic Development in Antiquity

In 1934, Joseph Needham, a British historian and embryologist, published A History of Embryology, in which he traced the history of how the embryo was thought to develop from antiquity to modern times. In this fascinating book we learn that Hippocrates (c. 460-370 BCE) believed that the fetus was formed by extracting breath from its mother, and that a series of small fires within the uterus gave rise to the bones and other organs of the embryo.  Aristotle (384-322 BCE) added some details about the role of the umbilical cord.  According to Needham, Aristotle understood that the role of the umbilicus was to nourish the fetus: The vessels of the umbilicus join onto the uterus like the root of a plant and through the cord the fetus receives its nourishment. Elsewhere, Aristotle claims that head of the fetus forms first. Galen (c. 129-216 CE) also used the analogy of the umbilicus serving like the root of a plant.  According to Galen, the embryo grew from menstrual blood, and then from the blood that nourished it through the umbilical cord.

What Actually Happens

Development of the Umbilical cord. A: The posterior body wall is established. B: the vitelline duct form as the cells form a head and tail end, fold inwards on their lateral sides. C: The umbilical cord forms as the yolk sac and vitelline duct fuse. From O'Donnell K. Glick P, Caty M. Pediatric Umbilical Problems. Pediatric Clinics of North America. 1988 24 (1) 792.

At its earliest stage the embryo consists of a sheet of cells, an amniotic cavity and a yolk sac. The sheet of cells develops a head (cranial) and bottom (caudal) end, and grows around most of the yolk sac. This enclosed yolk sac then grows into the gut of the embryo.  The part of the yolk sac that is not surrounded by the embryo is still connected to it by a thin tube called the vitelline duct.  This duct then fuses with the contained yolk sac, and forms a larger bundle of vessels we call the umbilical cord. This occurs between the 4th-8th week of gestation (calculated from the first day of the last menstrual cycle).  

It is clear then, that embryo does not grow from the head or from umbilical cord.  As you can see from the diagram, the fetus do not grow from the head. In fact the head develops from the early cells of the embryo as it takes on a cranial-caudal polarity, sometime around 3-4 weeks gestation, when the embryo is about 3mm in length. Neither does the embryo grow from the umbilical cord, as Abba Shaul claimed. In fact it is the umbilical cord that grows out from the early embryo, and not the other way around. (For more on talmudic embryology, see Samuel Kottek's 1981 paper Embryology in Talmudic and Midrashic Literature.)

As we will see in more detail in the winter of 2019, talmudic embryology reflected the prevailing Greek theories of the times. But those theories developed without the benefit of microscopes and the other tools later available to scientists. It was perfectly reasonable to claim that the embryo grew from its head, since even in antiquity the importance of the head for life was clear. No less unreasonable was the view that the embryo grew from the umbilical cord, for that cord does in fact sustain the embryo as it grows and matures inside the womb. But two wrong but reasonable theories does not make one correct one. Sometimes however, the rabbis of the Talmud were spot on with their embryology. For example, here is Rav Simlai (3rd century CE, and the rabbi who brought you the famous count of 613 commandments) describing how the fetus sits within the womb.  Compare his words below with the famous sketch of Leonardo Da Vinci.Then answer this question: How did he know?

“R. Simlai delivered the following discourse: What does an embryo resemble when it is in the bowels of its mother? Folded writing tablets. Its hands rest on its two temples, its two elbows on its two legs and its two heels against its buttocks. Its head lies between its knees, its mouth is closed and its navel is open, and it eats what its mother eats and drinks what its mother drinks...”

— Niddah 30b

Leonardo Da Vinci. Studies of the Fetus in the Womb. Drawn between 1510-1513.

Rashi and Why Women Light the Menorah

Don't Share This With Your Young Children

Ask a well-educated Jewish child about the origins of Chanukah, and they will likely tell you about the wicked Greeks who defiled the Temple, about the brave Maccabees who fought them, and about the miracle of the oil.  But in Rashi's commentary to the Talmud where this story is told, there is another part of the story. Here it is:

דאמר רבי יהושע בן לוי: נשים חייבות בנר חנוכה, שאף הן היו באותו הנס

 רש"י שם:  שגזרו יוונים על כל בתולות הנשואות להיבעל לטפסר תחלה  

Rabbi Yehoshua ben Levi said: Women are obligated to take part in the lighting, for they were included in that miracle...

Rashi: For the Greeks made an edict that all virgins who were about to marry must first have intercourse with the Prefect...

The great French exegete Rashi (d.1105) is referencing the Law of the First Night - Jus Primae Noctis, also known more graphically as The Right to the Thigh - Droit du Cuissage. We first encountered this when studying Ketuvot 3a. So let's go back to that daf.  

MAZAL TOV; WHEN'S THE WEDDING?

Today, when a bride and groom wish to secure a wedding day, it will depend on their budget and the availability of the caterer. My, how things have changed. In the times of the Mishnah, the wedding day was decided by the availability of the local rabbinic court, the Bet Din. Then, a wedding (of a virgin) could only take place on the night before the Bet Din convened.  This would ensure that if, after their magical first night, the groom suspected that his bride had not been a virgin, he could take his claim to court the very next day.  

“מפני מה אמרו בתולה נשאת ליום הרביעי שאם היה לו טענת בתולים היה משכים לב”ד

Why did they teach that a virgin must only marry on a Wednesday? So that if the groom questioned her virginity, he could hurry to the Bet Din...
”

— Ketuvot 3a

The Talmud (Ketuvot 3a) explains that this happy custom changed during a period of persecution. Rabbah, a forth century Babylonian sage, explained what this is all about: "[The authorities] said, "a virgin who gets married on Wednesday will first have intercourse with the governor" (הגמון). In order to avoid this awful legal rape, the wedding was moved a day early, to fly, so to speak, under the radar of the local governor. 

JUS PRIMAE NOCTIS IN THE TALMUD & MIDRASH

The law that Rabbah referenced is the same one that Rashi claims was imposed on Jewish brides by the Greeks. Its origins are further explained in the Talmud Yerushalmi, which dates it to the time of the Bar Kochba revolution:

 תלמוד ירושלמי כתובות פרק א הלכה ה  

בראשונה גזרו שמד ביהודה שכן מסורת להם מאבותם שיהודה הרג את עשו...  והיו הולכין ומשעבדין בהן ואונסין את בנותיהן וגזרו שיהא איסטרטיוס בועל תחילה התקינו שיהא בעלה בא עליה עודה בבית אביה 

In the beginning, they [the Romans] decreed destruction in Judea (for they had a tradition that Yehuda killed Esau) ... and they enslaved them and raped their daughters, and decreed that a soldier would have intercourse [with a bride] first. It was then enacted that her husband would cohabit with her while she was still in her father's house. 

A reference to Primae Noctis also appears in the Midrash Rabbah, a collection of rabbinic homilies edited sometime in the forth or fifth century. As told in Genesis 6, “the sons of God saw that the daughters of man were beautiful (tovot), and they took wives from whoever they chose.” The Midrash focuses on that word beautiful, and explains:

בראשית רבה (וילנא) פרשת בראשית פרשה כו 

אמר רבי יודן טבת כתיב, משהיו מטיבין אשה לבעלה היה גדול נכנס ובועלה תחלה, הדא הוא דכתיב כי טבת הנה, אלו הבתולות ויקחו להם נשים מכל אשר בחרו, אלו נשי אנשים, 

“Rabbi Judan said the word tovot (טבת) – beautiful – is written in the singular, [but read as a plural]. Meaning that the bride was made beautiful for her husband, but the lord of the nobles had intercourse with her first...”

JUS PRIMAE NOCTIS...IN THE MOVIES

There are numerous references to Primae Noctis in ancient and modern literature, from the Epic of Gilgamesh to The Marriage of Figaro. One recent example can be seen in the movie Braveheart, when the evil King Edward gallops into a village, to interrupt a wedding celebration. “I’ve come to claim the right of Primae Noctis. As lord of these lands, I will bless this marriage by taking the bride into my bed on the first night of her union.”  And as the groom is restrained by Edward's henchmen, Edward reminds the peasants “it is my noble right.”  

Jus Primae Noctis. Is there a more fearsome example of feudal barbarism? Of what one scholar called “a male power display…coercive sexual dominance…and male desire for sexual variety”?  But the legend, despite its appearance in many guises, is, fortunately, likely to be nothing more than just that: a legend.  

JUS PRIMAE NOCTIS...IS A LEGEND

Perhaps the most comprehensive investigation of the legend of Primae Noctis is The Lord's First Night: the Myth of the Droit de Cuissage, by the French social scientist Alain Boureau. His careful analysis is particularly important since, as we have seen, Rashi, our favorite French commentator, cites this legend twice. After a meticulous two-hundred page review of every alleged appearance of the legend, Boureau is clear:

“[T]he droit de cuissage never existed in medieval France. Not one of the arguments, none of the events insinuated, alleged or brandished, holds up under analysis.
”

— Alain Boureau, The Lord's First Night.

Others scholars agree with Boureau. In 1881, the German historian Karl Schmidt concluded that the right never existed.  In 1973, the historian J.Q.C. Mackrell noted that there is "no reliable evidence" that it existed. And Prof. Tal Ilan, now at the Free University of Berlin, addressed the myth of Primae Noctis in a magnificently titled 1993 paper: Premarital Cohabitation in Ancient Judea. Prof. Ilan noted that that “all medieval literature that evokes the custom of Jus Primae Noctis has been proven to be folkloristic and has no historical basis.” But what about the evidence from the Talmuds, and the Midrashim? Don’t they provide evidence that Primae Noctis was indeed practiced in the time of the Talmud? Not so, claims the professor:

If a motif of this sort could have appeared in a sixteenth-century document and upset the entire history of medieval Europe for the next two centuries, the same motif likewise could have cropped up in the fourth -or fifth-century Palestinian Talmud, falsely describing events of the second century.

Instead, Prof Ilan suggests that the Talmud used the myth of Primae Noctis to excuse the behavior of some prospective couples, who would engage in sexual relations before they married.  “the jus primae noctis was conveniently drawn in order to explain and justify a custom that seemed to the rabbis to undermine their view of proper conduct in Jewish society.”

“Some events do take place but are not true; others are—although they never occurred.”

— Elie Wiesel, Legends of Our Time

There is some further support to the claim that primae noctis never existed, and it is not one I have seen suggested before.  It is a claim from silence.  I've checked over 100,000 responsa, and there is not one on this topic. Not a single one.  If primae noctis really was a law of the Greek and Roman empires, and a feudal right across medieval Europe, then why were its implications for the Jewish community never discussed in the responsa literature?  This silence supports the conclusions of work done by Boureau, Ilan and others: it never existed. In fact Boureau wonders what muddled thinking would lead anyone to believe it existed in the first place: 

It has been clear from the start that no matter what social restrictions were put on conduct and the management of wealth, and no matter how violent mores became, the principle of free choice of an unfettered matrimonial life was the most sacred area of individual liberty in medieval Europe. The Church, European society's principal normative center, very early removed all restrictions on the marriage of dependents, and it imposed consent as a sacramental value.  No juridicial form, no custom, could attack that principal...sanctified in the twelfth century by the establishment of the sacrament of matrimony.  

HISTORY AND HERITAGE

The historian David Lowenthal has explained the differences between history and heritage. While history "seeks to convince by truth," heritage "passes on exclusive myths of origin and endurance, endowing us alone with prestige and purpose." Heritage, continues Lowenthal, commonly alters the past: sometimes it selectively forgets past evils, and sometimes it updates the past to fit in with our modern sensibilities. Sometimes it upgrades the past, making it better than it was, and sometimes it downgrades the past, to attract sympathy.  And so, how we read the Talmud will depend on whether we see it as a work of history or as a book of our heritage.  

“There you have it...some of it fact, and some of it fiction, but all of it true, in the true meaning of the word”

— Miles Orvel, The Real Thing: Imitiation and Authenticity in America

There are stories both wonderful and terrible from our Jewish past. Some are factual, and some are not, and a measured approach to how we might approach these stories has been suggested by Judith Baumel and Jacob J. Schacter. They explored the claim (published in The New York Times) that in 1942, ninety-three Beis Yaakov schoolgirls in Cracow committed suicide rather than face rape by their German captors. They concluded that the evidence to support the truth of the story is not conclusive one way or the other. 

Whether or not it actually happened as described is difficult to determine, but there is certainly no question that it could have happened...in response to those claiming that the incident was "unlikely" to have occurred, let us remind the reader that the period in question was one during which the most unlikely events did occur, when entire communities were wiped out without leaving a single survivor...Maybe it did happen. But maybe again it didn't. Could it have happened? Of course.

So Why Should Women Light the Menorah?

It seems very unlikely that Rashi's explanation for why women should light the Menorah has any factual basis; the legend of Primae Noctis is not likely to have been true. But some stories are true, even though they never happened. Ask yourself, from what you know about Jewish history, could it have been true? Yes. And that's what makes it all the more terrifying. Sadly, we have plenty of tragic stories from our Jewish history, and there is no need to create one that probably never happened. 

But if Rashi's reasoning was based on a myth, why should women - who according to traditional teaching are exempt from a positive time bound command - why should they light?  For an answer that should satisfy moderns, we need look no further than the Code of Jewish Law - the Sulchan Aruch (written about 460 years after Rashi's death).   

שולחן ערוך אורח חיים הלכות חנוכה סימן תרעה סעיף ג 

 אשה מדלקת נר חנוכה, שאף היא חייבת בה

 A women should light a light on Chanunkah, for she is obligated to do so...

So there you have it. Women should light...because they should light. We need no more of a reason than that.

Happy Chanukah.

Sotah 40a ~ Gratitude is Good for You

סוטה מ, א

בזמן ששליח צבור אומר מודים העם מה הם אומרים אמר רב מודים אנחנו לך ה' אלהינו על שאנו מודים לך 

When the chazzan says Modim, what does the congregation say? Rav said “we are grateful for the fact that that we are able to give thanks” (Sotah 40a)

Detail of cover from Thanks! How the new science of gratitude can maker you happier.  By Robert Emmons.  Houghton Mifflin Harcourt, 2007.

Much has been written in the social sciences about the effects of gratitude on a person’s physical and mental health. In the page of Talmud that will be studied tomorrow, Rav expressed a rather odd idea- that of all the things for which one could be grateful, the simple ability to be grateful was the most important of all.  Let’s turn to some of that scientific literature and evaluate Rav’s statement.

Gratitude Journals

In a review of the psychotherapeutic effects of gratitude, Robert Emmons from UC Davis and Robin Stern from the Center for Emotional Intelligence at Yale suggest that gratitude involves (a) affirming the “good things” in one’s life and (b) the recognition that the sources of this goodness lie at least partially outside the self. They note that in experimental studies, persons who were randomly assigned to keep gratitude journals on a weekly basis exercised more regularly, reported fewer physical symptoms, felt better about their lives as a whole, and were more optimistic about the upcoming week compared with those who "recorded hassles or neutral life events.” Rather than focus on complaints, they wrote, “an effective strategy for producing reliably higher levels of pleasant affect is to lead people to reflect, on a daily basis, on those aspects of their lives for which they are grateful.” The authors believe that gratitude is an effective psychotherapeutic intervention, which may "spontaneously catalyze the healing process.” 

“Clinical trials indicate that the practice of gratitude can have dramatic and lasting positive effects in a person’s life. It can lower blood pressure, improve immune function, promote happiness and well-being, and spur acts of helpfulness, generosity, and cooperation. ”

— Emmons and Stern. Gratitude as a Psychotherapeutic Intervention. J. Clin. Psychol. 2013. 69:846– 855

Letters of Gratitude

Keeping  a record of things for which you are grateful seems to have  psychological benefits. So does expressing that gratitude to others. Researchers from Kent State University studied the effects of writing letters of gratitude on three qualities of well-being: happiness, life satisfaction and depression.  They followed 219 people who agreed to write letters of gratitude for three weeks.  “Participants were…instructed to write non-trivial letters of gratitude to an individual to express appreciation for them. Participants were asked to be reflective, write expressively, and compose letters from a positive orientation while avoiding ‘‘thank you notes’’ for material gifts.  The researchers reviewed the letters “to insure the basic guidelines were followed”, and found that those in the letter-writing group had a significant improvement in their levels of happiness, which included feelings of gladness, satisfaction and fulfillment.  Compared to the non-writers, the letter writing group also showed and increased life satisfaction.  

“Gratitude appears to be a powerful and preexisting resource that when utilized can produce positive effects upon well-being.”

— Toepfer et al. Letters of Gratitude: Further Evidence for Author Benefits. J Happiness Stud (2012) 13:187–201

Finally, those in the writing group showed significant decreases in symptoms of depression over time and compared to non-writers. The authors concluded that “…writing letters of gratitude may have potential for alleviating depressive symptoms prior to more severe clinical depression. Further investigation is required before such claims can be made but the results are promising.” The study was published in the Journal of Happiness Studies. (Perhaps a subscription to this delightfully titled journal would make a good antidote to news in the papers lately. Put it on your Chanukah wish list.)

Effect of writing letters of gratitude - means for experimental and control groups on well-being variables and depressive symptoms. From Toepfer et al. Letters of Gratitude: Further Evidence for Author Benefits. J Happiness Stud (2012) 13:187–20. 

If you are looking for an entire book of the psychology of gratitude and appreciation, then you might consider reading Gratitude and the Good Life by Philip Watkins. In his review of the health benefits of gratitude, Watkins notes that “grateful people tend to be religious people.” Watkins emphasizes that religiosity is not a requirement for gratitude, and that there are many non-religious people who are very grateful. Nevertheless, “a number of religious variables show moderate to strong correlations with trait gratitude.” Which leads us to...

Gratitude to God

While there are health benefits to anyone who expresses gratitude, one study looked at the effects of expressing that gratitude to God, rather than to a person, in a paper published last year in the Journal for the Scientific Study of Religion. There were four authors: two from the University of Michigan and two from the Research Services arm of the Presbyterian Church. (Interestingly no conflict of interest was declared by any of the authors. Should being a member of a Church count as a conflict?) The authors of the paper, Gratitude to God, Self-Rated Health, and Depressive Symptoms, analyzed data from the US Congregational Life Survey and wrote:

 There are three reasons why feelings of gratitude to God may affect physical and mental health. First… gratitude is a positive emotion that arises from the pleasant feelings that are associated with receiving a benefit. Viewing gratitude as a positive emotion is important because a rapidly growing body of research indicates that positive emotions are associated with a range of beneficial physiological effects, including a lower heart rate, lower blood pressure, and improved immune functioning… Second, research… reveals that positive emotions, such as gratitude, are associated with the adoption of a range of beneficial health behaviors, including exercise and medication compliance…Third, research…indicates that people who feel more grateful to God are able to cope more effectively with the deleterious effects of stress....Consistent with earlier research, the results indicate that individuals who feel more grateful to God are more likely to rate their health in a favorable manner…and they are less likely to experience symptoms of depression.

The authorship of מודים דרבנן - A meditation on Gratiude

The Talmud (Sotah 40a) cites five different versions of what should be said when the chazzan recites the Modim prayer in the repition of the Amidah. Here they are:

סוטה מ, א

אמר רב מודים אנחנו לך ה' אלהינו על שאנו מודים לך

ושמואל אמר אלהי כל בשר על שאנו מודים לך

רבי סימאי אומר יוצרנו יוצר בראשית על שאנו מודים לך

נהרדעי אמרי משמיה דרבי סימאי ברכות והודאות לשמך הגדול על שהחייתנו וקיימתנו על שאנו מודים לך

רב אחא בר יעקב מסיים בה הכי כן תחיינו ותחננו ותקבצנו ותאסוף גליותינו לחצרות קדשך לשמור חוקיך ולעשות רצונך בלבב שלם על שאנו מודים לך

1. Rav: We are grateful to you Lord our God, for the fact that that we are able to give you thanks.

2. Shmuel: The God of all flesh, for the fact that we are able to give you thanks.

3. Rav Simai: Our creator, and the one who formed creation, for the fact that we are able to give you thanks.

4. The Nehardeans say in the name of Rav Simai: Blessings and praises to your great name for your having given us life and sustained us, and for the fact that we are able to give you thanks.

5. Rav Acha bar Yaakov: So may you continue to keep us alive and find favor in us and may you bring us together and gather our exiles to the courtyards of your sanctuary to observe your decrees and to do your will with a whole heart, for the fact that we are able to give you thanks.

Unable to decide between them, (and not wanting to hurt anyone's feelings,) Rav Pappa ruled that all should be said, (אמר רב פפא הילכך נימרינהו לכולהו)  which is what is done to this day. And this is one explanation of why this prayer is called מודים דרבנן  - it is a prayer of thanks of several rabbis.

As you no doubt will have noted, the one common thread in the five versions is that they all end with the phrase “for the fact that we are able to give you thanks.” As we have seen, evidence from the social sciences suggests that there are numerous health benefits associated with expressing gratitude.  Perhaps then, acknowledging the ability to express gratitude is acknowledging that on top of everything else, we are thankful for a way of improving our well-being. Expressing gratitude isn’t just a good idea; it might also improve your mental and physical health. That sounds like something worth doing three times a day.

“I would maintain that thanks are the highest form of thought; and that gratitude is happiness doubled by wonder.”

— G.K. Chesterton. A Short History of England, chapter 6.

Sotah 31a ~ What Can a Fetus See?

Happy anniversary to Talmudology. We are now a year old, and our very first post was about the viability of an eight month fetus.  The first post of our second year is also about the fetus.  This one concerns an aggadic statement, that is to say, a homiletic teaching, that is not to be taken literally - or so one would think.  In today's daf yomi the Talmud discusses the miracles which occurred as the Children of Israel crossed through the parted waters of the Red Sea. Rabbi Meir taught that even a fetus in its mother's womb praised God, saying "This is my God and I will glorify him." Now we might have considered this a homiletic teaching that is meant to simply express a degree of amazement and thanks.  But the Talmud then asks a question that suggests Rabbi Meir meant what he said more literally:

סוטה לא, א

והא לא חזו! אמר רבי תנחום כרס נעשה להן כאספקלריא המאירה וראו

These fetuses in the womb could not see the Divine presence, so how could they sing praise? Rabbi Tanchum said: Their mother's abdomen became as clear as glass for them and they were able to see.

While Rabbi Tanchum suggested that it takes physical sight rather than emotional insight to see the divine, it turns out that the fetus can see - and hear, while still in the womb.

Increased Fetal Heart Rate in Response to Light

In 1980, two Israelis published a preliminary report on the response to light of ten fetuses between 38 and 43 weeks' gestation. They inserted an amnioscope through the cervix and shone a light into the womb for thirty seconds while monitoring the heart rate of the little fetus. They found that eight of the ten fetuses had an acceleration of their heartbeat in response to the light. That's interesting you say, but hardly what Rabbi Tanchum was describing. And you'd be correct.  So let's turn to some other studies.

Increased Fetal Brain Activity in Response to Light

A review in the European Journal of Obstetrics and Gynecology and Reproductive Biology published in 1996 was sceptical that the fetus could see much of anything while inside the womb: 

In utero visual stimulation appears to be very limited...in a dark room the amniotic cavity may be candled with a torch light, especially in the case of a polyhydramnios [an excess of amniotic fluid]. Measurements performed during rat and guinea-pig gestation have demonstrated that if only 2% of incoming light was transmitted in utero below 550 nm, this value increases with wavelength of the signal to reach 10% around 650 nm. Thus, a limited portion of external light may reach the human fetal retina when eyelids are open (this behavior starts at 20 weeks) or through the eyelids. 

But in 2003 a group of researchers from the United Kingdom (with apparently nothing else to do for amusement) built a light source from a "cardboard tube lined with non-conducting aluminised plastic, resulting in a light intensity of 1,100–1,200 Lux at the maternal abdomen as measured with a hand-held light meter." After an ultra-sound confirmed that the fetus was looking forward (really, they did this too) they turned the light on and off. And all this took place while the mother and her in-utero child were lying in a functional MRI scanner, which was used to look for activation of the little fetal brain in response to the light. Of the nine subjects they tortured in this way, one could not be analyzed due to motion, three did not show any significant activation, and five showed significant activation. Oddly, none of the fetal brains that responded showed any activation of the occipital lobe, that part of the brain in which the primary visual cortex is located and which responds to light.  Instead, it was the fetal frontal cortex showed a response to the light being shone.  Hmmm.

The Fetal Response to Sound

So much for vision. Researchers have also studied what - if anything - a fetus may be able to hear.  A group from Rambam Hospital and the Technion in Haifa studied the effect of music on fetal activity. Back in 1982 they took twenty pregnant women and played them either 25 minutes of nothing, or 25 minutes of classical or pop music through headphones. If you are wondering, the music was either a canon and songs composed by Pachelbel or "the pop-hits of the [sic] Boney-M." (Give yourself an extra point if you can recall any of the pop hits of the Boney M.) Anyway, they played the music in random sequence and monitored the fetus for breathing and body movements.  They found that compared to no music, when music was piped into the mothers' ears there was a significant increase in the breathing movements of the fetus, but there was no difference between classical and pop music.  

“..it seems that the fetus moves into a more active state when music is played to the mother.”

— Zimmer, EZ. et al. Maternal Exposure to music and fetal activity. Europ. J. Obstet. Gyec. Reprod. Biol. 1982 (13) 210.

And remember the experiments with cardboard tubes shining light into the womb of forward facing fetuses? Well that same group also performed functional MRI scanning of the brains of a group of fetuses but this time they strapped "an MRI compatible headphone" to the maternal abdomen (or the maternal ears, as a control) and played 15 seconds of music. (The paper does not specify the kind of music that was chosen. I do hope it wasn't the Boney-M.) Five of the twelve fetuses that had music piped into their mother's abdomen showed activation of the temporal lobes, but despite this low number the authors enthusiastically concluded that their study showed "...that brain activity can be detected in response to stimulation prenatally..." 

“A ray of hope flitters in the sky
A tiny star lights up way up high
All across the land dawns a brand new morn
This comes to pass when a child is born”

— Boney M. When a Child is Born, 1981.

Giving Thanks - Thanksgiving

The Talmud describes how the Crossing of the Red Sea was a miracle of such extraordinary nature that even in-utero fetuses joined in singing a prayer of thanks with the Children of Israel. In his famous introduction to the tenth chapter of Sanhedrin, Maimonides describes how aggadah should not be taken literally. Instead, a deeper message should be sought. And so for our American readers, who celebrate Thanksgiving today, Talmudology leaves you with this question: what are you thankful for? For what blessings in your life might a fetus open its eyes and see, or say thanks while still in its mother's  womb? Now that I think of it, that's a question that everyone should answer.

Happy Thanksgiving.

“Human fetuses are, to a certain extent, able to memorize certain sensory properties...Despite the fact that they have only very short periods of wakefulness and that their brain is not mature enough to integrate sensory experiences, several experiments suggest that this does not prevent pre- and perinatal learning.”

— Lecanuet, J, Schaal B. Fetal Sensory Competencies. European Jopurnal of Obstetrics and Gynecology and Reproductive Biology 1996. 68: 1-23