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

Quiz 2 Study Guide

by: jjb13n

Quiz 2 Study Guide PSB 3004C

GPA 2.54

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

Material for Quiz 2
Physiological Psychology
Dr Hull
Study Guide
50 ?




Popular in Physiological Psychology

Popular in Psychlogy

This 3 page Study Guide was uploaded by jjb13n on Monday February 29, 2016. The Study Guide belongs to PSB 3004C at Florida State University taught by Dr Hull in Spring 2016. Since its upload, it has received 53 views. For similar materials see Physiological Psychology in Psychlogy at Florida State University.


Reviews for Quiz 2 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: 02/29/16
Quiz 2 Study Guide    ● What are the 3 main factors that result in the resting potential?  ○ Negatively charged proteins in the cell  ○ Selective permeability of K+ channels  ○ Sodium/Potassium (Na+/K+) pump  ● What attracts K+ ions into the neuron?  ○ Electrostatic pressure: ions flow towards oppositely charged areas  ○ The K+ is attracted to the negative proteins inside the cell  ● Why can’t enough K+ ions come into the neuron to cancel out the negative charges?  ○ Because NA+ is simultaneously being pumped out (every 3 for 2 K+), resulting in  negative charge  ● When is the most energy expended—during the resting potential or the action  potential?  ○ Resting potential (about ­70 mV)  ● What is the Na+/K+ pump, and how does it contribute to the resting potential?  ○ It is the main effector that establishes the resting potential  ○ It pumps 3 Na+ ions out for every 2 K+ ions it pumps in, adding to the negative  charge  ○ It pumps via the use of ATP energy, as it requires a lot   ● What are graded potentials, and how do they differ from action potentials?  ○ Graded potential: postsynaptic change in potential that spreads passively along the  membrane  ■ Decreases over time and distance  ■ The greater the stimulus, the greater the response      ● What are temporal and spatial summation?  ○ Temporal  ■ The summing of potentials that arrive at the axon hillock at different times  ○ Spatial  ■ The summing of potentials that come from different parts of the cell  ● How can a given neurotransmitter have excitatory effects at one synapse and  inhibitory effects at a different synapse?  ○ Excitatory open sodium potassium channel  ○ Inhibitory opens chloride channels ­ depending on receptor subtype    ● How and where is an action potential generated? How is it transmitted along an  axon? Why does it move in only one direction?   ○ The arrival of an action potential at the axon terminals of a presynaptic neuron,  and the subsequent release of neurotransmitter, results in a small graded  depolarization (excitatory postsynaptic potential; EPSP) or graded  hyperpolarization (inhibitory postsynaptic potential; IPSP) of the membrane of  the postsynaptic cell (depending on whether the postsynaptic receptor is  excitatory or inhibitory, respectively). If enough EPSPs are received, the  postsynaptic cell’s threshold is reached and an action potential is produced.   ○ The action potential passes down the axon in a single direction (like a wave)  ○ It moves in one direction because it can’t go back to where it has already passed  because of the refractory period  ● How does the presence or absence of myelin affect this process? What is saltatory  conduction?  ○ The presence of myelin speeds it up and saves energy  ○ The absence of myelin slows down the transfer  ○ Saltatory Conduction (the jumping of action potentials from node to node)  ● Describe the 2 parts of the refractory phase. What contributes to each phase? What  is the significance of each for neuronal activity?  ○ Absolute Refractory Phase (no new action potentials are produced)  ○ Relative Refractory Phase (only strong stimulation can produce an action  potential)  ● Describe two mechanisms by which the actions of neurotransmitters are stopped  rapidly.   ○ Chemical inactivation  ○ Reuptake (transmitter is taken up into the presynaptic cell)  ○ Degradation (rapid breakdown and inactivation of transmitter by an enzyme)    ● Explain the “math” that the postsynaptic neuron uses to process the information  that it receives (in the form of postsynaptic potentials).  ○ The "math" is referring to the sum of EPSPs and IPSPs  ○ EPSPs work to "excite" the cell towards firing an action potential (cell is  depolarizing ­­­> going towards threshold)  ○ IPSPs work to bring the cell away from threshold. The neurotransmitter released  from a pre­synaptic cell results in a graded potential in the post synaptic cell.   ○ When EPSPs exceed the IPSPs (in the axon hillock) an all­or­nothing "action  potential" propagates down the axon  ● Summarize the sequence of events that occurs when a synapse is activated, from the  arrival of an action potential at the axon terminal to the release of neurotransmitter  ○ At chemical synapses, the arrival of an action potential causes voltage­gated  calcium channels to open in the membrane of the axon terminal. Calcium influx  induces vesicles to fuse to the synaptic membrane and release transmitter; the  amount released is proportional to the size of the calcium current  ● What two types of effects do transmitters have on their receptors?  ○ Io ​notropic receptors open an ion channel  ○ Metabotropic receptors activate G­ proteins  ● What does an EEG measure?  What is an ERP?  ○ EEG  ■ measures spontaneous electrical activity  ■ can reveal rapid changes in brain function  ○ ERP  ■ reflect the reaction of populations of neurons to discrete stimuli                           


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

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Allison Fischer University of Alabama

"I signed up to be an Elite Notetaker with 2 of my sorority sisters this semester. We just posted our notes weekly and were each making over $600 per month. I 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."


"Their 'Elite Notetakers' are making over $1,200/month in sales by creating high quality content that helps their classmates in a time of need."

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.