CogLab #1-Receptive Field

CogLab #1-Receptive Field - COGLAB#1 RECEPTIVE FIELDS...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
COGLAB #1: RECEPTIVE FIELDS NEURONS -Billions of individual cells in brain RECEPTIVE FIELD -Any stimulus that changes neuron’s firing rate -Every neuron has RECEPTIVE FIELD -Concept most useful in those parts of the brain that are tied to specific senses (touch, audition, vision, taste) or to motor control NEUROPHYSICOLOGICAL STUDY OF VISIUAL RECEPTIVE FIELD METHOD -Insert electrode into neuron to record electrical potential, then present visual stimuli to animal & record cellular responses. -Note changes in electrical potential & determine if light at particular location is: excitatory, inhibitory, or outside receptive field. -By watching cell’s behavior as stimulus changes, researcher can map out receptive field of neuron KNOWLEDGE OF NEURAL RECEPTIVE FIELD: -Provides information about the role of neuron in visual perception -Neurons close to retina have circular shaped receptive fields -Some neurons, center of circle is excitatory & surrounding in inhibitory -Some neurons in V1 of cortex sensitive to light- to- dark edges & dark- to-
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/23/2012 for the course PSY 305 taught by Professor Reeves during the Spring '08 term at University of Texas.

Page1 / 2

CogLab #1-Receptive Field - COGLAB#1 RECEPTIVE FIELDS...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online