PSY100Y5 Lecture Notes - Lecture 2: Visible Spectrum, Sensory Neuron, Absolute Threshold
13
PSY100Y5 Full Course Notes
Verified Note
13 documents
Document Summary
Psychophysics: sensation is the stimulation of sense organs, it is universal, unique, involves theories and your personality, perception is the selection, organization, and interpretation of sensory input, subjective and individual of energy. Thresholds: sensory receptors are tuned to a particular form. Auditory receptors in the ear code for sound: sensory systems require a minimum amount of pressure changes, not for light energy for activation (absolute threshold): The visual system: the eye detects electromagnetic radiation. Window for the rest of the eye. It dilates/contracts so it allows light to hit the retina. Bend/reflect the light so light hit the. Have a lot blinds spots but brain makes our brain seamlessly make one picture. Transduction of light photoreceptors at the back of the eye: light travels through the retina to impinge on. Light bleaches a pigment contained within: bleaching leads to a graded receptor potential that eventually produces an action potential in the ganglion cell the photoreceptors.
