Shared Flashcard Set

Details

Cognitive Science CH3
Definitions
15
Physiology
Undergraduate 1
02/25/2010

Additional Physiology Flashcards

 


 

Cards

Term
representation
Definition
properties of the world manifest in cognitive (mental reps- grandmother cells)and neural (neural reps- where rep is neurally)systems
Term
single cell recording
Definition
measures responsiveness of neuron action potential / sec
1.intracellular- into axon itself
2. extracellular- outside membrane
Term
grandmother cell
Definition
hypothetical neuron responds to 1 stimulus
Term
rolls and deco
Definition
1. local rep- all info in 1 neuron (grandma)
2. fully distributed- all info in neurons of given population
*3.sparse distributed- small portions of neurons carry info: stim/events
Term
rate coding
Definition
given stimulus associated with # action potentials / second
Term
temporal coding
Definition
synchrony of firing used by neurons to code same event
Term
eeg
Definition
connects to post synaptic dendrite current
low signal:noise ratio
Term
mental chronometry
Definition
study of time course info processing.
changes in efficiency manifest in time
Term
additive factors method
Definition
dividing reaction time into stages (sternberg)
encoding, comparing, decision, responding
Term
associative priming
Definition
reaction time better if proceeded by similiar stimulus
Term
exogenous erp components
Definition
depends on physical properties/ perceptual processing
Term
endogenous erp components
Definition
depends on properties of task/ process cognitive demands
Term
inverse problem
Definition
hard to find source of electrical activity from scalp
Term
dipole modelling
Definition
attempts to solve inverse by assuming how many dipoles
Term
MEG
Definition
magnetic, better spatial resolution than eeg
Supporting users have an ad free experience!