Lecture 6

Question 1

Steven’s Power Law

Answer 1

quantifying the relationship between perceieved magnitude (P) and stimulus intensity (S)

Question 2

equation for Steven’s Power Law

Answer 2

P = KS^n
P = perceived magnitude
K is a constant
S = stimulus intensity

Question 3

doctrine of specific nerve energies

Answer 3

the nature of a sensation depends on which sensory fibers are stimulated, not on how the fiber is stimulated (Johannes Muller, 1838)
the activation of the target area in cortex was the critical element in experience

Question 4

example of doctrine of specific nerve energies

Answer 4

TMS electrical current creates magnetic field that passes through the skull and can influence brain activity

Question 5

modularity

Answer 5

the idea that
specific areas or networks
(modules) of the brain are
specialized to process certain
types of information or
perform certain functions

Question 6

sensory modularity

Answer 6

idea that specific brain
regions are responsible for
processing certain types of
sensory information

Question 7

neuron

Answer 7

basic cellular units for processing information

Question 8

what are microelectrodes used for in single-unit recordings?

Answer 8

to record signal from individual neurons