1. Hormones and Development
Lecture 6

2. Food for thought How do hormones affect brain?
What effect do hormones have on behavior at critical points in development?

3. How boys and girls become boys and girls
Default at conception is girl

4. How boys and girls become boys and girls
Default at conception is girl
Early in prenatal development, male hormones are secreted (in boys), and male sex organs begin to develop

5. How boys and girls become boys and girls
Default at conception is girl
Early in prenatal development, male hormones are secreted (in boys), and male sex organs begin to develop
What happens if something here goes wrong

6. How boys and girls become boys and girls
Default at conception is girl
Early in prenatal development, male hormones are secreted (in boys), and male sex organs begin to develop
What happens if something here goes wrong
androgenized females

7. How boys and girls become boys and girls
Default at conception is girl
Early in prenatal development, male hormones are secreted (in boys), and male sex organs begin to develop
What happens if something here goes wrong
androgenized females
XY females

8. Effect of hormones on behavior
Hormones can act as neurotransmitters

9. Effect of hormones on behavior
Hormones can act as neurotransmitters
Used in communication between neurons in the brain just like other chemicals

10. Effect of hormones on behavior
Hormones can act as neurotransmitters
Used in communication between neurons in the brain just like other chemicals
Can impact how effectively other neurotransmitters work

11. Neurotransmitters
Chemicals released in communication between neurons

12. Neurotransmitters Chemicals released in communication between neurons
Could be affected by hormonal changes

13. Neurotransmitters Chemicals released in communication between neurons
Could be affected by hormonal changes
Examples

14. Neurotransmitters Chemicals released in communication between neurons
Could be affected by hormonal changes
Examples
Dopamine

15. Neurotransmitters Chemicals released in communication between neurons
Could be affected by hormonal changes
Examples
Dopamine
prefrontal cortex development

16. Neurotransmitters Chemicals released in communication between neurons
Could be affected by hormonal changes
Examples
Dopamine
prefrontal cortex development
PKU

17. Neurotransmitters Chemicals released in communication between neurons
Could be affected by hormonal changes
Examples
Dopamine
prefrontal cortex development
PKU
Seratonin

18. Neurotransmitters Chemicals released in communication between neurons
Could be affected by hormonal changes
Examples
Dopamine
prefrontal cortex development
PKU
Seratonin
Depression

19. Neurotransmitters Chemicals released in communication between neurons
Could be affected by hormonal changes
Examples
Dopamine
prefrontal cortex development
PKU
Seratonin
Depression
Autism?

20. Effect of hormones on behavior
Hormones are like neurotransmitters

21. Effect of hormones on behavior
Hormones are like neurotransmitters
They are secreted by glands in the body and brain

22. Effect of hormones on behavior
Hormones are like neurotransmitters
They are secreted by glands in the body and brain
In response to stress

23. Effect of hormones on behavior
Hormones are like neurotransmitters
They are secreted by glands in the body and brain
In response to stress
In response to bodily changes
Eating disorders

24. Effect of hormones on behavior
Hormones are like neurotransmitters
They are secreted by glands in the body and brain
In response to stress
In response to bodily changes
Eating disorders
Aging

25. Adolescence
How might hormones change the brain in adolescence

26. Adolescence How might hormones change the brain in adolescence
Possibly have some role in changes we know about – behavior, maturation of frontal lobes, impulse control

27. Adolescence How might hormones change the brain in adolescence
Possibly have some role in changes we know about – behavior, maturation of frontal lobes, impulse control
Sexuality

28. Adolescence How might hormones change the brain in adolescence
Possibly have some role in changes we know about – behavior, maturation of frontal lobes, impulse control
Sexuality
Hormones secreted by hypothalamus likely play a role

29. Adolescence How might hormones change the brain in adolescence
Possibly have some role in changes we know about – behavior, maturation of frontal lobes, impulse control
Sexuality
Hormones secreted by hypothalamus likely play a role
Hypothalamus size in homosexuality