Class Notes (836,562)
Canada (509,854)
HMB200H1 (140)
Lecture 16

Lecture 16

1 Page
114 Views
Unlock Document

Department
Human Biology
Course
HMB200H1
Professor
John Yeomans
Semester
Winter

Description
HMB200H1S L16; March. 7, 2012  Conclude: Vasopression 1a recs in VP affect long-term pair bonding Sex, Gender and the Brain (continued) relationships Gender Identity Oxytocin & Attachment  Some homosexual males feel male, some feel female  Oxytocin in mother helps her feel bonding to child  Central subdivision of Bed N. of Stria Terminalis (BNST) 44% o Or else: mother wouldn’t want to help child get milk larger in males than females  Suckling  tactile pathway  released in nursing (let-down reflex)   6 transgendered males have smaller cBNST like females maternal bonding in rodents & sheep (can smell offspring thru o A transgendered female showed a larger cBNST like males pheromones) o Transgendered males have no change in their hypothal  Intranasal oxytocin in humans  greater “trust” in evaluating o Swaab faces, less amygdala activity  No BNST difs in homosexual males o Oxytocin recs in Amygdala (central nucleus) inhibit amygdala o But have difs in hypothal fear responses  greater trust of strangers  No INAH difs in transgendered males  Central n: where all output sent from o No relation to preference o Humans aren’t influenced that highly by this because need a lot  Are these correlations causal? of it so a little can get thru  But shows we are still affected by chemicals & aren’t as o Only a correlation noticed, not causal relationships o Hypothal dictates sexual bhvrs independent from chemical processes as we first believed o Limbic system dictates your gender identity – difs in BNST  Oxytocin recs in Amygdala & Hippocampus o Pathways from Paraventricular n (PVN) & Supraoptic n. BNST Size Difs  dictate gender identity (SON)  Females have higher oxytocin recs than males?? o Rate of anxiety very high in females, could be related to a decrease in oxytocin recs  Bed N. of Stria Terminalis (BNST): in deep limbic system, involved in emotional learning o Darker, more oval-shaped in males  A,B: Indicates BNST size dictates gender o
More Less

Related notes for HMB200H1

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit