PSY 205 Chapter Notes - Chapter 3: Medial Forebrain Bundle, Axon Terminal, Neuroglia

• School: Syracuse University
• Department: Psychology
• Course: PSY 205
• Professor: Houck

Document Summary

The neural impulse: using energy to send information. Inside and outside of the neuron are fluids containing electrically charged atoms and chemicals called ions. Ions flow back and forth between membranes, but not at an equal rate: slightly higher concentration of neg charged ions in cell, resting potential: neurons stable, negative charge when the cell is inactive. Sending signals: chemicals as couriers: synaptic clef: a microscopic gap between the terminal button of one neuron and the cell membrane of another neuron, presynaptic neuron: sends the signal, postsynaptic neuron: receives the signal. Looking inside the brain: research methods: lesioning: destroying a piece of the brain, electrical stimulation of the brain (esb): sending a weak electric current into a brain structure to stimulate (activate) it. The midbrain: midbrain: segment of the brainstem that lies between the hindbrain and the forebrain, integrates sensory processes such as vision and hearing, reticular formation: modulation of muscle reflexes, breathing, pain perception, regulation of sleep and wakefulness.