S-Cool Revision Summary

S-Cool Revision Summary

Adaptation Characteristics of an organism that has survival value or increases reproductive potential.
Electroencephalogram Graph revealing the electrical activity of the brain.
Endogenous pacemaker Internal clocks controlling biological rhythms.
Exogenous zeitgeber External cues (German; 'time-givers') moderating the activity of the endogenous pacemakers.
Free-running Increased period of a bodily rhythm due to the removal of environmental cues.
Hypothalamus Part of the forebrain with a role in motivation, Homeostasis and emotional response.
Latent content Hidden meaning of dreams.
Lucid dreaming Ability to control events in a dream.
Manifest content Symbolic version of the true meaning of a dream.
Melatonin Hormone regulating many circadian and circannual rhythms.
Neurotransmitter Chemical messenger that crosses a synapse between a neurone and another cell.
Paradoxical sleep Intense brain activity accompanied by paralysis during sleep (REM sleep).
Pheromones Chemical messengers produced by one organism and having an effect on another.
Photoperiod Duration of daylight in a 24 hour period.
Pineal gland Gland located in the forebrain responsible for melatonin production.
Psychodynamic approach Pioneered by Freud, focusing on the conflicts within a individual's psyche that motivate behaviour.
REM rebound 'Catching up' on lost REM sleep.
REM starvation Deprivation of REM sleep.
Seasonal Affective Disorder (SAD) Depression brought about by the onset of shortening days in autumn/winter.
Serotonin Neurotransmitter with many roles in the brain, including the precursor to the hormone melatonin.
Sleep deprivation Method of investigating the function of sleep by keeping participants awake.
Suprachiasmatic nucleus Located in the hypothalamus; the site if the biological clock.