PSY 260 Lecture Notes - Lecture 5: Postcentral Gyrus, Lamellar Corpuscle, Stimulus Modality
Document Summary
Magnetic: magnetoreception: labeled lines: particular neurons are meant for distinct sensory experiences nerve input to the brain is speci c per nerve, conversion. Sensory transduction: the process in which a receptor cell converts stimuli into an electrical signal across its membrane. Generator potential: the change in a receptor cell as a result of stimuli made lead to action potential: skin. Pacinian corpuscle: skin receptor imbedded in the inner most layer that selectively response to vibration and pressure: only responds to < 200 cycles per second, when presented with stimuli, stretches membrane, ions can pore in. When enough ions have pored in to reach over the threshold then action potentials are set from sensory cell to spine. Meissner"s corpuscle: responds to light touch, responding to especially changes in stimuli (around hair follicles) Merkel"s discs: responds to light touch, especially edges and isolated points on a surface (near surface) good for reading braile.
