PSYC 1200 Lecture Notes - Lecture 1: Sensory Neuron, Sound Energy, Cochlea
25 Nov 2017
School
Department
Course
Professor
Document Summary
Process of detecting external events with sense organs and turning stimuli neural signal. Ex. sound = air particles pushing against eardrum. Light sensitive structures in eye (ie. rods and cones) Hair cells that respond to pressure change in ear. Diff. nerve endings respond to pressure, temp changes and pain. Nerve endings that respond selectively to diff. compounds. Ex. orga(cid:374)izi(cid:374)g the (cid:448)i(cid:271)ratio(cid:374)s of the eardru(cid:373) i(cid:374)to so(cid:373)ethi(cid:374)g re(cid:272)og(cid:374)iza(cid:271)le (ie. perso(cid:374)"s voice) Specialized receptors transform the physical energy of outside world neural impulses. N. impulses travel to brain and influences activity of diff. brain structures internal representation. Transduction of light = light reaches back of eye light-sensitive chemicals in retina convert energy to nerve impulses numerous brain centres where colour and motion are processed and objects identified. Transduction of sound (in cochlea) = sound energy converted travel to hearing centres in brain. All senses use action potential for transmitting info in the brain. Different senses are separated in the brain.
