NROSCI 0080 Lecture Notes - Neuroglia, Synaptic Plasticity, Eric Kandel
Document Summary
Human senses = sight, scent, taste, touch, hear. Additionally: balance, pain, kinesthetic sense (body position, motion, & accel. ), internal organs (interoception), & electroreception (absent in humans) Different sensory systems multilevel structures responsible for processing of sensory info. Common plan: sensory r"s neural relays primary sensory cortex assoc. sensory cortices. R"s neuron 1 neuron 2 neuron 3 neuron 4 . Sensory r"s: cells located in sense organs; responsible for. Can be specialized structures @ end of peripheral nerve or free nerve endings. Transduction r"s convert (transduce) energy of stimulus into neural activity. Receptor fields: region of space serviced by sensory r"s which form the area. High level sensory neurons have larger receptive field. Size r-field \/ as importance ^ ( higher density = more neurons per area = ^ acuity) Receptor - types: convert specific type of energy to readable form by cell. Neural relays - # levels before info arrives @ primary sensory cortex.
