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Lecture 6

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Department
Psychology
Course
PSYC 100
Professor
James Mac Dougall
Semester
Fall

Description
Lecture 6September 20 2011Neurosystem operationsNeurons are specialized for communicationsoBasic building blocks of nervous systemoReceive and send chemical messagesoHave same structure but vary in their location and sizeoTypessensory motor and interneuronsResting potentialsoPolarizeddifferent charges inside and outside regulated by ion channels at the nodes of RanvierAction potentials cause neural communicationoChanges in a neurons electrical charge result in an action potential or neural firingoSignals are excitatory or inhibitoryoFiringmeans of communication within networks of neuronsoAllornone principleNeuron either fires with the same potency every timeHow often it fires depends on the strength of the stimulationBrighter lightfasterEither if fires or it doesntNeurotransmitters bind to receptors across the synapseoNeurons do n
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