AP Psych Unit 2 (Part 2)

An amplified recording of the waves of electrical activity that sweep across the brain's surface. These waves are measured by electrodes placed on the scalp.

a visual display of brain activity that detects where a radioactive form of glucose goes while the brain performs a given task

a series of x-ray photographs taken from different angles and combined by computer into a composite representation of a slice through the body

a technique that uses magnetic fields and radio waves to produce computer-generated images of soft tissue. MRI scans show brain anatomy.

the biological clock; regular bodily rhythms that occur on a 24-hour cycle

Brainwaves detected by an EEG that represent a state of fully alert wakefulness

the relatively slow brain waves of a relaxed, awake state

the transition into sleep, marked by slowed breathing and irregular brain waves; hypnagogic sensations/hallucinations, and myclonic jerks may occur

Sleep stage characterized by its periodic sleep spindles, or bursts of rapid, rhythmic brain-wave activity. About half the night is spent in this phase.

sleep stage that lasts about 30 minutes and your brain emits large, slow delta waves, and you are hard to awaken.

describes sleep in which vivid dreams typically occur; this type of sleep increases as the night progresses while stage 4 sleep decreases

according to Freud, the remembered story line of a dream (as distinct from its latent, or hidden, content)

according to Freud, the underlying meaning of a dream (as distinct from its manifest content)

drugs (such as alcohol, barbiturates, and opiates) that reduce neural activity and slow body functions

poor judgment, slower judgment, loss of concentration

Drugs (such as caffeine, nicotine, and the more powerful amphetamines, cocaine, and Ecstasy) that excite neural activity and speed up body functions.

psychedelic ("mind-manifesting") drugs, such as LSD, that distort perceptions and evoke sensory images in the absence of sensory input

a disorder in which the person stops breathing for brief periods while asleep

A sleep disorder characterized by uncontrollable sleep attacks. The sufferer may lapse directly into REM sleep, often at inopportune times.

a sleep disorder characterized by high arousal and an appearance of being terrified; unlike nightmares, night terrors occur during Stage 4 sleep, within two or three hours of falling asleep, and are seldom remembered

bizarre experiences, such as jerking or a feeling of falling or floating weightlessly, while transitioning to sleep

the tendency for REM sleep to increase following REM sleep deprivation (created by repeated awakenings during REM sleep)

chemicals that affect the central nervous system and alter activity in the brain

an altered state of consciousness reported after a close brush with death (such as through cardiac arrest); often similar to drug-induced hallucinations

a suggestion made during hypnosis that influences the participant's behavior afterward

a split in consciousness, which allows some thoughts and behaviors to occur simultaneously with others