New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

Bio Psychology Study Guide

by: Nikita Shah

Bio Psychology Study Guide PSYC 2015

Marketplace > George Washington University > Psychlogy > PSYC 2015 > Bio Psychology Study Guide
Nikita Shah

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

Study guide includes lecture notes from sleep cycle and obesity and feeding
Biological Psychology
Kravitz, D
Study Guide
PSYCH 2015
50 ?




Popular in Biological Psychology

Popular in Psychlogy

This 3 page Study Guide was uploaded by Nikita Shah on Monday March 28, 2016. The Study Guide belongs to PSYC 2015 at George Washington University taught by Kravitz, D in Fall 2015. Since its upload, it has received 26 views. For similar materials see Biological Psychology in Psychlogy at George Washington University.


Reviews for Bio Psychology Study Guide


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 03/28/16
Biological Psychology Notes on Sleep Cycle and Feeding Endogenous Cycles  Circadian rhythm also regulates the frequency of eating and drinking, body temperature, secretion of hormones, urination, and sensitivity to drugs o This also affects our mood ▯ Setting and Resetting the Biological Clock  The purpose of the circadian rhythm is to keep our internal workings in phase with the outside world  Human circadian clock generates a rhythm slightly longer than 24 hours when It has no external cue to it  Resetting our circadian rhythms is something necessary  Zeitgeber: refers to the stimulus that resets the circadian rhythm ▯ Mechanisms of the Biological Clock:  Two types of genes are responsible for generating the circadian rhythm: o Period: produce proteins called PER o Timeless: produce proteins called TIM  Typically use EEG to measure brain activity while sleeping ▯ Brain Activity During Sleep  Rapid eye movement: paradoxical sleep  Muscles relax, heart rate increases  Breathing is rapid and shallow  Vivid Dreaming ▯ Eating Behavior 1: Eat huge, but infrequent ▯ Eating Behavior 2: Eat according to food abundance ▯ ▯ Digestive System Overview Function: breakdown food into smaller molecules o Saliva is used to break down the Carbohydrates in the mouth o The Stomach is used to breakdown proteins into amino acids o Small Intestine has enzymes to break down proteins, fats, and carbs to be absorbed o Large Intestine = absorb digested food ▯ Food Intake at the Early Age At the age of weaning, most mammals lose the intestinal enzyme lactase (to metabolize lactose) Many human adults have enough lactase to consume milk and other dairy products throughout the lifetime ▯ Short-Term Regulation of Feeding The brain regulates eating through messages from the mouth, stomach, intestines, fat cells, and elsewhere The desire to taste and other mouth sensations, such as chewing are also motivating factors in hunger and satiety ▯ Regulation of Feeding: Stomach and Duodenum The main signal to stop eating is the distention of the atomach The vagus nerve conveys information about the stretching of the stomach walls to the brain The splanchnic nerves convey information about the nutrient contents of the stomach ▯ Regulation of Feeding: Duodenum Cholecystokinin (CCK) regulates hunger by: o Closing the sphincter muscle between the stomach and duodenum and causing the stomach to hold its contents and fill faster ▯ Regulation of Feeding: Glucose, Insulin, And Glucagon  Glucose, insulin, and glucagon levels also influence feelings of hunger  Most digested food enters the bloodstream as glucose: important source of energy for body; nearly the only fuel used in the brain ▯ Long-Term Regulation of Feeding: Leptin  Long-term hunger regulation is accomplished via the monitoring of fat supplies by the body ▯ Long-Term Regulation of Feeding: Obesity  Obesity caused by consistent overeating damaged the endoplastic reticulum in neurons of the hypothalamus  Leads to decreased leptin sensitivity  Physical exercise produces chemicals of the immune system that repair the ER  A diet consisting of tasty, high calorie foods makes animals (and people) obese, and they find other rewards less rewarding  There is only a weak relationship between depression and weight gain  A high-fat diet before birth can result in the offspring being born with a larger than average lateral hypothalamus ▯ Brain Mechanisms Information from all parts of the body regarding hunger impinge onto the arcuate nucleus


Buy Material

Are you sure you want to buy this material for

50 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Jennifer McGill UCSF Med School

"Selling my MCAT study guides and notes has been a great source of side revenue while I'm in school. Some months I'm making over $500! Plus, it makes me happy knowing that I'm helping future med students with their MCAT."

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."

Parker Thompson 500 Startups

"It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.