Test 1 Flashcards
Language areas in Left Hemisphere
Broca makes speech, wernicke is written language
Concussions, TBI
sharp blow to head or rapid acceleration can cause brain to shake, twist or crash into skull
Consciousness
Personal awareness of mental activities, internal sensations and external environment
Consciousness as a river
Consciousness allows us to develop personal identity with continuity, integrat past, present and future behaviors
attention
Capacity to selectively focus awareness on particular stimuli in external environment or interal thought
Circadian rythm
24 hours long, daily fluctuations in bio and psycho processes. Sun, controlled by cluster of nerves in hypothalamus
Two types of sleep
- REM, NREM
REM
sleep with REM and dreaming, voluntary muscle activity suppressed
- brain more active, first episode 5-15 minutes
NREM
Quiet sleep, dreamless sleep, 3 stages of sleep
First 90 minutes of sleep
- progressive decrease in brain/body activity, dreamless sleep
Length of sleep cycles
about 90 minutes, REM episodes lengthen and NREM episodes shorten through night
What is a dream?
Unfolding sequence of perceptions, thoughts, and emotions
sleep thinking
Occurs during NREM, vague, bland thought processes about real-life events
Manifest content of dreams
Elements
Latent content of dreams
Meaning of dreams
Activation- synthesis model of dreams
Sleep brain activity produces a dream story, dreaming due to automatic activation of brainstem circuits
Neurocognitive model of dreaming
Continuity of wake and dream, dreams reflect interests, personality, worries,
Insomnia
- Inability to fall asleep, stay asleep
OSA - Obstructive Sleep Apnea
- person repeatedly stops breathing during sleep CPAPN
Narcolepsy
excessive daytime sleepiness, sleep attacks with sudden loss of voluntary muscle control
Parasomnias
- sleep terrors, sleepwalking, sleeptalking, sleep-related eating disorder, sexsomnia
hypnosis
- cooperative social interaction
People respond to suggestions with changes in perception, memory and behavior
Psychoactive drugs
Alter consciousness by changing arousal, mood, thinking, sensations and perceptions
- depressants, opioids, stimulants, psychedelics
Depressants
inhibit CNS activity
Opioids
relieve pain and produce euphoria
stimulants
increase brain activity, arouse behavior and increase mental alertness,
Amphetamines
class of stimulant drugs that arouse CNS, suppress appetite
Methamphetamine
illegal drug manufactured in home/street labs
