PSYCH 230 Lecture Notes - Lecture 4: Striatum, Basal Forebrain, Sodium Channel
Document Summary
Dorsal ganglion: has a little bump, how you identify the dorsal side. Amphetamine (adderall) - release neurotransmitters without action potential by attacking calcium channels tricks the monoimineoxidase enzyme. Excitatory: increases chance for action potential by letting in sodium. The moments before reaching the -40 mv mark with excitatory and inhibitory takes place in the axon hillock: sodium channels open (voltage-gated) at the -40 mv, then potassium channels open (also voltage gated) Because they reach equilibrium; there is an equal amount of sodium inside and outside of the cell. An absolute and then refractory period takes place. Agonist: binds to a place near where a ligand would bind on receptor, increases the likelihood of the neuron firing an action potential. Dopamine: synthesized in substagi niagra, ventral magneta mesocoritcol limbic, mesal. **the (cid:272)ell (cid:271)odies do(cid:374)"t (cid:449)ork (cid:449)here they origi(cid:374)ate ((cid:272)ells (cid:272)a(cid:374) re(cid:272)ei(cid:448)e a(cid:374)d ha(cid:448)e neurotransmitters on place but release that neurotransmitter somewhere else)
