NEUROSCI 101 Lecture Notes - Lecture 5: Sensory Cortex, Sensory Neuron, Cochlear Implant

• School: Duke University
• Department: Neuroscience
• Course: NEUROSCI 101
• Professor: Williams

Document Summary

Sensation occurs when the receptors for sensory systems register the energy from the external environment: sound, light, colors, etc. Perception is the content of your conscious experience. Perception without sensation- ex. of white triangle created from nothing. Possible to have one sensation but two perceptions- ex. of old lady/young lady image. If you stimulate the nerve, you will see what it does. Ex. stimulate olfactory and smell a. something a. i. see it. Its not the nerve that"s special, it"s the cortical area that has been specialized to. All sensory systems follow the same plan-- receptor to the cortex. Information comes in via sensory organ, travels via nerve to thalamus, then to a. designated cortical region. All have receptors that discriminate among forms of energy and among different: ex. different receptors in eye can distinguish between wavelengths to perceive color. Respond best to change (adaption and habituation: example of changing stimulation a. i. Ex. no longer feeling shirt when put it on.