Exam 2 Flashcards
(52 cards)
Cycle lasting 24 hours
Circadian
Where is biological clock found in the brain
Tiny cluster of neurons in the hypothalamus
When do certain hormones peak
Epinephrine in the late morning, melatonin at night, GH at night
When biological rhythms are not in phase with one another
Internal desynchronization (jet lag)
Waves seen in the awake (hypnagogic)
Beta waves
Edge of consciousness
Alpha waves
Non-REM stages 2+3
Theta waves
Deep sleep
Delta waves
Waves found during REM sleep
Beta waves
When the body goes into REM earlier and longer to compensate
REM rebound effect
Insufficient sleep, inability to fall asleep quickly, frequent arousals, or early awakenings
Onset, maintenance, and termination insomnia
Intermittently stops breathing (between exhale + inhale), loud snoring common
Sleep apnea
Sudden daytime attacks of sleepiness (lapses into REM) during moments of excitement
Narcolepsy
Usually occur during stage 4, more common in children
Sleep talking/walking + night terrors
Detection of physical energy emitted by physical objects
Sensation
What cells are found in the periphera
Rod cells
What cells are found in the fovea
Cone cells
Name for someone that is completely colorblind
Monochromat
Red-green or yellow-blue colorblind
Dichromat
Sense of where body is located in space
Proprioception
Sense of touch that isn’t painful
Tactile sensation
Pain sensations elicited by noxious stimuli - found everywhere except brain
Nociception
Cells sensitive to stimuli are warmer or colder than body
Temperature
Minimum stimulation needed to detect a particular stimulus 50% of the time
Absolute threshold
