PSYC 100 Chapter Notes - Chapter 3&4: Procaine, Stereopsis, Audism

• School: McGill University
• Department: Psychology
• Course: PSYC 100
• Professor: Jens C Pruessner

Document Summary

How does the nervous system operate: intro: Responsible for everything we think, feel, and do. Neurons: basic units of nervous system; cells that receive, integrate, and transmit info. Operate through electrical impulses, communicate with other neurons through chemical signals, and form neural networks. Central nervous system (cns): brain and spinal cord. Peripheral nervous system (pns) all other nerve cells in the body: neurons are specialized for communication. Nerve cells are powered by electrical impulses; communicate with other nerve cells through chemical signals. Reception: chemical signals are received from neighboring neurons. Transmission: signals are passed on to other neurons: types of neurons: Sensory (afferent) neurons: detect info from the physical world and pass that info along to the brain. Somatosensory nerves provide info from the skin and muscles. Motor (efferent) neurons: direct muscles to contract or to relax. Interneurons: communicate within local or short-distance circuits: neuron structure: Dendrite: detects chemical signals from neighboring neurons. Cell body (soma): collects and integrated info.