PSYC 1000 Lecture Notes - Lecture 5: Peripheral Nervous System, Neurogenesis, Curare

• School: University of Guelph
• Department: Psychology
• Course: PSYC 1000
• Professor: Benjamin Giguere

Document Summary

Cell body: contains the nucleus and decides the activation. Action potential: a neural impulse that travels to the terminal buttons by the axon and is generated by moving positive and negative charges (akin to a wave) How is this wave initiated: resting potential, receive signals from other neutron, whe(cid:374) sa(cid:455) (cid:862)go(cid:863) the threshold is reached. How neurons communicate with each other: synapse (cid:894) neurons don"t touch each other(cid:895) Action potential causes the release of neurotransmitters in the synaptic gap: neurotransmitters are chemicals used to send a signal across the synaptic gap. (cid:862)float(cid:863) a(cid:272)ross the s(cid:455)(cid:374)apti(cid:272) gap u(cid:374)til the(cid:455) (cid:271)i(cid:374)d (cid:449)ith spe(cid:272)ifi(cid:272) re(cid:272)eptor sites o(cid:374) the de(cid:374)drites of another neuron. What happens to neurotransmitters after the communication: they get released from the receptor sites, reuptake: the process by which the vesicles reabsorbs the neurotransmitters. Medication can inhibit this process such as selective serotonin reuptake inhibitors (ssri, e. g. ,