APSY-UE 2 Lecture Notes - Lecture 3: Hindbrain, Midbrain, Neurotransmitter

• School: New York University
• Department: Applied Psychology
• Course: APSY-UE 2
• Professor: Adina Schick

Document Summary

Neurons are are individual cells in the nervous system that receive, integrate, and transmit information: synapse the points at which neurons interconnect. Neurons are separated by the synaptic cleft (two neurons don"t touch each other) The fluid interior of a resting axon has an excess of negatively charged ions, whereas the fluid outside the axon has more positively charged ions. Positive outside / negative inside: action potential: the charge difference across the membrane when a neuron is firing (30mv) When a neuron fires, channels in its cell membrane open, briefly allowing positively charged sodium ions to rush in. For an instant, the neuron"s charge is less negative (i. e. , positive) creating: neurotransmitters: action potential stimulates the release of neurotransmitters action potential. into the synaptic cleft. neuron to another. Neurotransmitters are chemicals that transmit information from one. Acteylcholine (ach) plays a role in learning and memory and is a messenger between motor neurons & skeletal muscles.