PSYC 1010 Midterm: psych test prep #2.docx

• School: York University
• Department: Psychology
• Course: PSYC 1010
• Professor: Gerry Goldberg

Document Summary

Consciousness is the awareness people have of themselves and the environment around them. Different states of consciousness are associated with different brain wave patterns. Brain waves are tracings that show the kind of electrical activity going on in the brain. Scientists use an electroencephalograph, or eeg, to record these waves. The main types of brain waves are alpha, beta, theta, and delta. Types of biological rhythms include circadian, infradian, and ultradian rhythms. Endogenous biological rhythms originate from inside the body rather than from the outside environment. Biological clocks in the body regulate the sense of time. The suprachiasmatic nucleus regulates circadian rhythms of sleep. Different theories suggest that people sleep to conserve energy, stay safe from predators, or restore body tissues depleted during the day. Researchers use eegs, emgs, eogs, and ekgs to record sleep patterns. At each stage, different types of brain waves function, and heart rate, breathing, and temperature vary.