BIOL-3160 Chapter Notes - Chapter 10: Olfaction, Oval Window, Angular Acceleration
Document Summary
Sensory r characteristics its not the nerve but where in the brain the fibers terminate that determine sensation type. Muller"s law: sensory r responds to a particular modality of environmental stimulus, transduces stimulus energy into electrochemical energy, brain interprets impulses along a specific neural pathway as the stimulus. Lateral inhibition: most important mechanism enabling location of stimulus site, purpose is to have greater precision even if things are overlapping receptors at edge of stimulus strongly inhibited compared to center. Receptor (generator) potential burst of impulses when stimulus removed: sensory endings produce local graded changes in membrane potential and depolarize the membrane, you must keep having the action potentials until one is big enough to meet the threshold. Response of tonic rs (nonchanging receptors: generator potential is proportional to the intensity of the stimulus if threshold is reached, an increase in the generator potential amplitutude will result in an increase in action potential frequency.
