neuraldev2_22bb

neuraldev2_22bb - Muller Specific nerve energies Action...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Review What is the leading known cause of preventable mental retardation? Alcohol What is consistently found in brains of individuals with mental retardation? Altered dendritic spines What treatment might alleviate the reduction in dendritic spines? Enrichment All sensory modalities start with what? Receptors
Background image of page 1

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

View Full DocumentRight Arrow Icon
Review Further, all or almost all sensory information does what? Cross the midline, synapse in thalamus The homunculus is an example of what (all senses have this)? Topographical map Registration of physical stimuli from the environment by the sensory organs is what? Sensation
Background image of page 2
Review Interpretation of stimuli from the environment is what? Perception What is adequate stimulus? Stimulus receptors are tuned to How does the brain know which sense is being used? Labeled lines
Background image of page 3

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

View Full DocumentRight Arrow Icon
Sense and Perception: How
Background image of page 4
Background image of page 5

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

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7

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

View Full DocumentRight Arrow Icon
Background image of page 8
Background image of page 9
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Muller Specific nerve energies Action Potentials Labeled lines Separate nerve tracts for each modality Signal transduction Converts stimulaus into electrical potentialacross membrane Transduction Multifunctional receptors Convert stimulus energy to neural activity Ex. Pacinian Corpuscle Touch alters structure Stretches axon tip Opens Mechanically gated ion channels Na+ influx depolarize Transduction Generator potentials Similar to EPSPs graded Amplitude proportional to stimulus Coding Action Potential All or none Intensity AP frequency 1200/s Recruitment Stimulus increases, number of receptor increases Range fractionation Differences in receptor thresholds...
View Full Document

This note was uploaded on 02/24/2011 for the course PSYC 460 taught by Professor Lawrence during the Spring '10 term at South Carolina.

Page1 / 9

neuraldev2_22bb - Muller Specific nerve energies Action...

This preview shows document pages 1 - 9. Sign up to view the full document.

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