PSY 305 Lecture Notes - Lecture 3: Dendrite, Axon Terminal, Visual Perception
29 Jun 2018
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3 October Psych 305 Notes
Class was flipped today: Lecture notes were supposed to be taken at home from a video on
canvas, these notes are in class review and discussion
● Which of the following techniques does not measure brain activity? (A and B)
a. Magnetic resonance imaging (MRI) - only measures brain structure
b. Computerized axial tomography (CT/CAT) - only measures brain structure
c. Positron emission tomography (PET) - measures brain activity using glucose
● Positron emission tomography (PET) scans show?
a. Minute details of brain anatomy
b. Brain areas that currently have a particularly high level of blood flow compared to
baseline (describes FMRI- highest resolution of current imaging techniques)
c. Brain areas that are currently consuming a particularly high level of
glucose (correct)
d. Brain areas that are currently consuming a particularly high level of oxygen
(FMRI)
● Imagine a friend is giving you her new phone number. You repeat the number to try and
remember it. Which cognitive process are you engaging to accomplish this ask?
a. Perception
b. Decision making
c. Working memory
d. All of the above processes
● What is the primary difference between neurons and glia?
a. Neurons are the primary units/processors of brain activity while glia are
support cells
b. Neurons are all of one type (not true), glia are of three types: those that form
myelin sheaths, provide nutrients to neurons, and those that remove dead cells
and pathogens from the brain
c. Abnormalities in neurons can lead to deficits in function (true), while
abnormalities in glia can be compensated for (false)
● What is a reflex circuit? What are it’s components?
a. Happens automatically/involuntary
b. works through transmission of electrical signals
c. Via Sensory neurons, interneurons, and motor neurons
d. Ex: pain withdrawal
● The primary motor projection area forms a “map” of the body and the projections control
movement to specific areas of the body. The amount of cortical tissue dedicated to
different parts of the body in this area correlates with:
a. The size of the body part
b. The sensitivity of the area (correct for the somatosensory area)
c. The precision of movement for the body part
d. The distance of the area from the cortex
● How do neurons communicate?
Document Summary
Class was flipped today: lecture notes were supposed to be taken at home from a video on canvas, these notes are in class review and discussion. Imagine a friend is giving you her new phone number. You repeat the number to try and remember it. Which cognitive process are you engaging to accomplish this ask: perception, decision making, working memory, all of the above processes. What are it"s components: happens automatically/involuntary, works through transmission of electrical signals, via sensory neurons, interneurons, and motor neurons, ex: pain withdrawal. The primary motor projection area forms a map of the body and the projections control movement to specific areas of the body. How do neurons communicate: through chemical (ap) and electrical (neurotransmitters) connections, electrical communication is along the neuron, chemical communication is between two neurons. What is an action potential: all-or-none, depolarization traveling down the axon, opening and closing of na and k channels.
