8.2 Bruce effect

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Advanced Neurobiology II

58 calificaciones

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Peking University

Advanced Neurobiology II

58 calificaciones

Hello everyone! Welcome to advanced neurobiology! Neuroscience is a wonderful branch of science on how our brain perceives the external world, how our brain thinks, how our brain responds to the outside of the world, and how during disease or aging the neuronal connections deteriorate. We’re trying to understand the molecular, cellular nature and the circuitry arrangement of how nervous system works. Through this course, you'll have a comprehensive understanding of basic neuroanatomy, electral signal transduction, movement and several diseases in the nervous system. This advanced neurobiology course is composed of 2 parts (Advanced neurobiology I and Advanced neurobiology Il). They are related to each other on the content but not on scoring or certification, so you can choose either or both. It’s recommended that you take them sequentially and it’s great if you’ve already acquired a basic understanding of biology. Thank you for joining us!

De la lección

Gene and behavior

8.1 Introduction of behavior9:49

8.2 Bruce effect6:39

8.3 Definition of behavior8:14

8.4 Classification of behavior9:35

8.6 Transcriptional feed back9:27

8.7 Photoentrainment11:18

8.8 Gene and sex Ⅰ9:54

8.9 Gene and sex Ⅱ4:25

8.10 Parabiosis9:51

8.11 Leptin15:09

Conoce a los instructores

Chenjian Li
Professor
School of Life Sciences
Donggen Luo
Research Fellow
School of Life Sciences
Yan Zhang
Professor
School of Life Sciences, Peking University

Determine dysfunction.

Let's take a look at another one.

There was a called Bruce Effect.

It's a very famous effect.

What's Bruce Effect?

Actually, it's this lady.

That is actually in 1959,

she noticed that pregnant mice will abort

if they're exposed to another unfamiliar male.

What's this mean?

It's actually, if one mouse,

actually female mouse already carried a baby,

and then if there was a another intruder,

went in to this colony by a male mouse, and then,

there was a program actually built in the newer system.

And then will trigger the abortion of

these pregnant female mouse.

This is called the Bruce Effect.

And then, people found later actually

that Bruce Effect actually is cost to

buy the olfactory cues, his chemical cues.

That means actually another intruder male carries some kind of a smell and

chemicals, and then this female detected and

then will go through the olfactory signaling, and then detect that signal,

and will go to the brain, and then control that behavior.

Is actually is controlled by the animal you serve.

It's the female controls this behavior by herself.

Later, people found actually also

the Bruce Effect in the monkey.

It's is a trove, a science paper.

Over there they should be in the colony,

in the monarchy of course it's a hierarchy, a dominant.

[FOREIGN] The dominant male

in this colony actually

has all the power to mate

with a female in the colony.

And there is a observation if this male is weak and

there was intruder, another male coming into this colony and

the previously dominant male, actually,

if you cannot win the fight with another male,

then there was trouble.

And that means actually he will give up this colony, and

then the other one would take over.

And when the other male monkey

take over this colony, and

all those pregnant female monkey will,

how is it, abortion, okay?

This is quite interesting.

Why they needed to do this?

It's not actually did a mayor force to do these thing.

Again, those actually are behavior controlled by the female.

Of course this one,

he could argue that's because for

this one they can save the energy

to not waste any energies for

breathing those kind of young baby

from the previously father.

Because actually you and

those baby monkey grew up.

And then, the new father will kill all those other young animals.

So in this case, and you waste a lot of energy or resource from the female.

Because you kind of maybe have a long time pregnancy and then the baby come out.

And then, was killed by the new father.

Then, it's just a waste.

So in this case, as you do in the evolution,

the monkey developed a program called Bruce Effect

to control this fate by then served, by the female, by the mother.

I forgot some quite while your touching behaviors,

for example, for the elephant,

if they found, actually, a dead one,

they will stop there for quite a long time.

And sometimes you can see the tears maybe come out.

This is really called emotional goodbye.

So what controls this kind of behavior?

It's quite interesting, I just show a couple of these kind of behaviors and

then we still don't know actually most of the genes and

[INAUDIBLE] to control these kind of behavior.

So talk about this one, then what's the behavior?

What's the definition of the behavior?

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