PSY 1 Lecture Notes - Lecture 6: Sensory Neuron, Sensory Processing, P-Wave
Document Summary
Sensation: reaction of the body to the external world (cold, heat, touch, pain, light, etc. ) Sensory receptors (eyes, ears, etc. ) receive sensory information and pass it on to the brain through neural impulses (perception) Perception: sensory processing areas in the brain transduct sensory information and decide what to do with it (look at textbook example of stoplight) Transduction: conversion of variations in external stimulus properties into nervous impulses. Receptors: light-sensitive rods and cones in the retina of the eye. Receptors: pressure-sensitive hair cells in cochlea of inner ear. Stimuli: molecules dissolved in fluid on the tongue. Stimuli: molecules dissolved in fluid membranes in the nose. Humans are only sensitive to a small portion of the spectrum (visual spectrum: in between uv waves and infrared waves) Light waves are reflected through the cornea. Enter eye through pupil (opening of the eye) Travel to lens which focuses the light on the retina.
