neurophysiology

Neurophysiology

observation of electrical and chemical signaling processes within and between neurons

information within neurons is what type of signals?

electrical signals( action potentials travelling down axon)

information traveling between neurons is what type of signals?

chemical signals(neurotransmitters in synapses

action potential

electrical signal conveyed down the axon

axon hillock

the gatekeeper, action potential must be at -55 to go down axon

electrical gradient

difference in electrical charge between the inside and outside of the cell

resting potential

the resting -70mv eletrical gradient

allows for quick action when needed

plasma membrane

allows small uncharged chemicals, not ions, flow both in to and out of a cell

protein channels allow some charged ions to cross the membrane, but very few