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PSYC 230 Exam 1 - UNC Chanon Questions
and Answers
Early 1800's Ans: the mind cannot study itself
Later 1800's Ans: i. Donders - RT of decision making
ii. Ebbinghaus- time course of forgetting
Early 1900's Ans: Watson & Skinner: behaviorism
Mid 1900's Ans: PC and Al's, Chomsky and Neisser (1st textbook)
neuropsychology Ans: study cases of brain damage
Experimental Psychology: attention Ans: study accuracy and
reaction time
soma Ans: cell body; nucleus
dendrites Ans: collect info (receive), many
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axon Ans: send info (transmit), one, can be myelinated
neurons receive a signal... Ans: physical or chemical
receptor cells (sensory neuron) Ans: physical, rods/cones or
touch
interneurons Ans: a neuron that transmits impulses between
other neurons, especially as part of a reflex arc
sodium diffuses through dendrites to cell body... Ans: passive
current; strong enough to reach a threshold point before action
current can begin
Steps of Action Potential Ans: a. Sodium channels open
(depolarization)
a) Triggered by diffusing sodium by dendrites to cell body
b. Potassium channels begin to open (hyperpolarization)
c. The axon returns to its resting potential
d. The ion pump restores the normal distribution of sodium and
potassium ions
at rest... Ans: inside of cell is negative compared to outside of cell
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When is the inside of the cell most positive? Ans: Na+ channels
become refractory
Myelination- why? Ans: a. Makes signal travel faster
b. Where myelin is wrapped around the axons, the ion channels are
unable to open
c. Develop as you develop
Single Cell Recording Ans: Pros: high spatial resolution and
precise timing (temporal)
Cons: hard to pin point specific cells and what produces the
activity in those cells, behavior of cells is more than the sum of its
parts, usually cannot be done in humans (invasive)
ERP Ans: pros: precise timing (temporal), noninvasive
cons: poor spatial, requires many trials
EEG Ans: general states of consciousness; like a worse version of
ERP
MRI Ans: structure
© 2025 All rights reserved
PSYC 230 Exam 1 - UNC Chanon Questions
and Answers
Early 1800's Ans: the mind cannot study itself
Later 1800's Ans: i. Donders - RT of decision making
ii. Ebbinghaus- time course of forgetting
Early 1900's Ans: Watson & Skinner: behaviorism
Mid 1900's Ans: PC and Al's, Chomsky and Neisser (1st textbook)
neuropsychology Ans: study cases of brain damage
Experimental Psychology: attention Ans: study accuracy and
reaction time
soma Ans: cell body; nucleus
dendrites Ans: collect info (receive), many
© 2025 All rights reserved
, 2 | Page
axon Ans: send info (transmit), one, can be myelinated
neurons receive a signal... Ans: physical or chemical
receptor cells (sensory neuron) Ans: physical, rods/cones or
touch
interneurons Ans: a neuron that transmits impulses between
other neurons, especially as part of a reflex arc
sodium diffuses through dendrites to cell body... Ans: passive
current; strong enough to reach a threshold point before action
current can begin
Steps of Action Potential Ans: a. Sodium channels open
(depolarization)
a) Triggered by diffusing sodium by dendrites to cell body
b. Potassium channels begin to open (hyperpolarization)
c. The axon returns to its resting potential
d. The ion pump restores the normal distribution of sodium and
potassium ions
at rest... Ans: inside of cell is negative compared to outside of cell
© 2025 All rights reserved
, 3 | Page
When is the inside of the cell most positive? Ans: Na+ channels
become refractory
Myelination- why? Ans: a. Makes signal travel faster
b. Where myelin is wrapped around the axons, the ion channels are
unable to open
c. Develop as you develop
Single Cell Recording Ans: Pros: high spatial resolution and
precise timing (temporal)
Cons: hard to pin point specific cells and what produces the
activity in those cells, behavior of cells is more than the sum of its
parts, usually cannot be done in humans (invasive)
ERP Ans: pros: precise timing (temporal), noninvasive
cons: poor spatial, requires many trials
EEG Ans: general states of consciousness; like a worse version of
ERP
MRI Ans: structure
© 2025 All rights reserved
