Lecture 6 - Sensory Receptors Two Kinds of Information 1)...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Sensory Receptors Two Kinds of Information 1) Qualitative (type of stimulus) —receptors are specialized , and message goes to a specific region of the brain 2) Quantitative (how much) Sensory Receptors --Act as transducers —covert stimuli into electrical impulses --Have receptor potentials —vary in magnitude --when receptor potential becomes less negative—magnitude is greater Quantitative Information Larger (less negative) receptor potentials lead to more frequent action potentials in sensory neurons Sensory Adaptation If stimulus remains constant—response declines BECAUSE Receptor potential declines—so action potentials are less frequent Sensory Receptors Classified by Source of Stimulus 1) Exteroceptors --Eyes, Ears 2) Proprioceptors --Body Position 3) Interoceptors --Body Chemistry Sensory 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
Classified by Type of Stimulus 1) Mechanoreceptors --Stimulated by mechanical energy 2) Chemoreceptors --Stimulated by chemicals 3) Thermoreceptors --Stimulated by temperature 4) Photoreceptors
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/06/2010 for the course BIO 01-119-10 taught by Professor D'arville during the Fall '09 term at Rutgers.

Page1 / 5

Lecture 6 - Sensory Receptors Two Kinds of Information 1)...

This preview shows document pages 1 - 3. Sign up to view the full document.

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