PSY-B - Psychology PSY-B 320 Lecture Notes - Lecture 20: Karst, Receptive Field, Sensory Neuron

• School: IUPUI
• Department: PSY-B - Psychology
• Course: PSY-B - Psychology PSY-B 320
• Professor: Cristine Czachowski

Document Summary

Nature of sensation and perception: the o(cid:374)ly i(cid:374)put our (cid:271)rai(cid:374)s re(cid:272)ei(cid:448)e fro(cid:373) the (cid:862)real(cid:863) (cid:449)orld is a series of a(cid:272)tio(cid:374) pote(cid:374)tials passed along the neurons of our various sensory pathways. How nerves can turn energy, such as light waves, into nerve impulses is understood. The pathways those nerve impulses take to reach the brain are also known. Less known is how we end up perceiving one set of nerve impulses as a representation of the world. Sensory receptors: specialized cells that transduce (convert) sensory energy (e. g. , light) into neural activity (action potentials, ea(cid:272)h se(cid:374)sory syste(cid:373)"s re(cid:272)eptors are desig(cid:374)ed to respo(cid:374)d o(cid:374)ly to a (cid:374)arro(cid:449) (cid:271)a(cid:374)d of energy: Taste & olfaction: chemical molecules ap. Auditory: air pressure mechanical energy ap. Vision: light energy chemical energy ap. Sample sensory information and help locate sensory events in space. Keep your head steady, and fix your eyes on a point in front of you. What you see is the receptive field for both eyes.