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Unformatted text preview: ms, etc. 4 7/4/12 know this shit!!!!!! he said Gray vs. White matter
Myelin surrounding axons.
Electrical impulse transmission. Gray matter White matter Gray matter
Soma and dendrites White matter
Gray matter Synaptic activity Functional Unit of the NS
Principle of dynamic polarization priciplw of connctional speciﬁcity---just konw htey male precise connection
dont need to know the other bullet for this (Cajal, 1906) dynamic polarization--unidirectional ! Unidirectional flow of information (i.e.,
from dendrites to the axon) Principle of connectional specificity (Cajal,
! No cytoplasmic connection between
neurons ! Neurons make precise connections (i.e., not random) STIMULUS Principle of Dynamic Polarization
• Concerned with the flow of
information (electrical signals)
within a neuron
• Information flows from the
dendrites to the axon
• Due to characteristics of the
neuron, information will not
back propagate (flow in the
opposite direction) 5 7/4/12 ACTION potential know thi...
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This document was uploaded on 03/28/2014 for the course KNES 385 at Maryland.
- Fall '08