psych chapter 5 Flashcards
biological rhythm
a periodic, more or less regular fluctuation in a biological system, may or may not have psychological implications.
entrainment
the synchronization of biological rhythms with external cues, such as fluctuations in daylight.
endogenous
generated from within rather than by external cues
circadian rhythm
a biological rhythm with a period of about 24 hours
suprachiasmatic
an areas of the brain containing a biological clock that governs circadian rhythms
melatonin
a hormone, secreted by the pineal gland, that is involved in the regulation of daily biological rhythms.
melatonin
a hormone secreted by the pineal gland . that is involved in the the regulation of daily biological rhythms.
internal desynchronization
a state in which biological rhythms are not in phase with one another
chronotype
a persons pattern of sleep and wakefulness throughout a typical day
seasonal affective disorder
a controversial disorder in which a person experiences depression during the winter and an improvement of mood in the spring.
rapid eye movement.
sleep periods characterized by eye movement, loss of muscle tone, and dreaming.
REM behaviour disorder
a disorder in which the muscle paralysis that normally occurs during REM sleep is absent or incomplete, and the sleeper is able to act out his or her dreams.
consolodation
a process by which the synaptic changes associated with recently sorted memories become durable and stable, causing memory to become reliable.
lucid dream
a dream in which the dreamer is aware of dreaming
activation synthesis theory
the theory that dreaming results form the cortical synthesis and interpretation of neural signals triggered by activity in the lower part of the brain.
