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M. M.
Diese Karteikarten bieten einen umfassenden Überblick über klinische Psychologie für Studierende. Sie behandeln Themen wie Aggression, Angststörungen, OCD und ökologische Emotionen, wobei biologische, psychologische und soziale Faktoren sowie Interventionen und Therapieansätze im Mittelpunkt stehen. Besonders nützlich für Studierende, die sich auf Prüfungen vorbereiten oder ihr Verständnis klinischer Konzepte vertiefen möchten.
Flashcards
165
Students
2
Language
German
Category
Psychology
Level
University
Created / Updated
30.04.2025 / 25.02.2026

Flashcards

Types of Frequency Band/ Brain Wave

Delta, Theta, Alpha, Beta, Gamma

Delta Brain Wave

Frequency Range (Hz.): 0.5-3

Mental State (Activation): Deep sleep

Theta Brain Wave

Frequency Range (Hz.): 4 - 7

Mental State (Activation): Drowsy wakefulness, relaxation

Alpha Brain Wave

Frequency Range (Hz.): 8 - 13

Mental State (Activation): Relaxed wakefulness, eyes closed

Beta Brain Wave

Frequency Range (Hz.): 14 - 30

Mental State (Activation): Wakefulness, mentally/ physically active, psychological stress

Gamma Brain Wave

Frequency Range (Hz.): 31 - 60

Mental State (Activation): Special arousal conditions

Sleep Stages

Wakefulness

Non-REM Sleep Stages 1-4

REM Sleep

Wakefulness

alpha & beta activity 

Non-REM Sleep Stages

1. Low-amplitude, high-frequency EEG signal (alpha, beta, theta) 5% total sleep time

2. Higher amplitude, lower frequency (sleep spindles & K-complexes ) (K-complexes are stage specific) 20% total sleep time

 

Slow-Wave-Sleep (SWS), often get summoned up into one stage, 20% total sleep time

3. Appearance of first delta waves (10-50%)

4. Dominance of delta waves (>50%)

REM Sleep

  • EEG similar to stage 1: high frequency, occasional theta-activity
  • High arousal threshold
  • Rapid eye movements 
  • Muscle atonia / muscular inhibition
  • dreams
  • 20-25% total sleep time

EPG

eye activity

EMG

Muscular activity

Sleep Architecture

Cyclic sequence of sleep stages

  • Period duration: ~ 90min
  • 2 runter zu 4 hoch zu REM
  • Non-REM & REM = basic Rest-Activity Cycle (BRAC)
  • REM sleep increases towards end of night 
  • SWS decreases towards end of the night

Hyothesis of sleep-inducing substances / Schlafstoff-hypothesse

 

  • Old
  • Hypnotoxin -> produced during wakefulness -> fall alssep
  • Reduced during sleep -> wake up

Restorative Theories

  • Being awake disrupts the body‘s homeostasis
  • Sleep restores body & brain
  • E.g., tissue repair, energy replenishment & memory consolidation
  • Pro: every animal sleeps, why make vulnerable if we dont need, however not related to physical size e.g. elephant only needs 3 hours of sleep

Adaptive/Evolutionary Theories

  • Sleep as evolutionary adaptation for survival
  • Helps conserve energy and avoid danger during vulnerable times (e.g., night)
  • Animals who are less vulnerable sleep less e.g. elephant (contra jaguar schläft 10 h)

Borbély‘s Two-Process Model of Sleep

  • Process S: Sleep Homeostasis
    • Represents sleep pressure
    • Builds up during wakefulness
    • Dissipates during sleep
  • Process C: Circadian Rhythm
    • Regulated by internal body clock (Suprachiasmatic Nucleus, SCN)
    • Influences sleep timing
  • Not enough sleep: rising sleep pressure

Circadian Rhythm

  • Biological process following an approximately 24-h cycle
  • Most dominant rhythm in humans
  • physiological / psychological circadian rhythms

Physiological Circadian Rhythms

  • Sleep-wake cycle
  • Body temperature
  • Endocrine rhythms (i.e., cortisol, melatonin)
  • Food intake

Psychological Circadian Rhythms

  • Pain sensitivity
  • Reaction time
  • Vigilance/Alertness
  • Memory

 

Free-Running Circadian Rhythm

Circadian rhythms under constant enviornmental conditions

work even without external "Zeitgeber" (e.g. light, food intake, temperature, social information)

Components Circadian Rhythms

Zeitgeber -> synchronizes -> Oscillators

Oscillators = Pacemakers = biological structures/ systems responsible for generating/ controlling rhythmis physiological processes

  • Primary Oscillators -> ZNS, Nucleus Suprachiasmaticus (most important inner clock) 
  • Secondary Oscillators/ Passive Pacemakers -> PNS, Synchronize soecific organ systems

Nucleus Suprachiasmaticus (SCN)

central pacemaker of the circadian rhythm

rel. klein, über Chiasma Opticum, Teil des Hypothalamus

Afferents: Ganglion cells of retina, Retinohypothalamic tract

way information about light gets to it: ganglion cells of retina -> bipolar cell -> zapfen/ stäbchen -> Retinohypothalamic Tract -> SCN

Gen-Protein Rhythms - Cells of SCN

  1. clock protein + cycle protein bind -> clocl/cycle dimer
  2. clocl/cycle dimer moves into nucleaus & binds to DNS -> Activation transcription Per- & Cry Genes
  3. Per & Cry associate -> bind to Tau protein
  4. Per/ Cry/ Tau complex inhibits activity of Clocl/Cycle dimers -> slowed transcription (P.S Endproduktrepression)
  5. Degradation of Per/Cry/TAu complex processes starts (takes ~ 24h)

Connection to light: light triggers glutamte release from ganglion cellls -> stimulates transcription cry gene

brain area relevant for ability to sleep

anteriorer hypothalamus

brain area relevant for being awake/ damage = to much sleep

posterior hypothalamus

brain area relevant for waking up

 

reticular activating system (RAS) & reticular formation

Bremer lesion experiments: cutting between midbrain & forbrain -> inability to wake up, cutting between lower brain & spinal cord -> still noraml sleep wake rhythm

 

Neurochemicals for Sleeping

Melatonin (sleep induction & maintenance)

Acetylcholine (Maintenance of wakefulness, promotes REM sleep)

Serotonin (activating, wake promoting, REM-termination/ suppression)

Orexin (Activating, wake promoting, bloackage of REM, muscle atonia)

Sleep disorders

  • Insomnia
  • Hypersomnia
  • Parasomnia

Insomnia Definition

  • Difficulty initiating sleep, maintaining sleep, or early-morning awakening
  • despite adequate opportunity to sleep (DSM-5
  • Leading to significant distress or impairments in functioning

Insomnia Disorder profile

  • Frequency of 3 or more nights per week and duration of 3 months or longer
  • NOT explained by presence of mental disorders or medical conditions
  • Prevalence: most common, 10% of adult population, frequency increases with age, female/ male ratio: 2:1, low socioeconomic status increases insomnia risk

Acute Insomnia

  • Sleep disorder triggered by a specific stressor, which remits once the stressor is removed

Psychophysiological Insomnia

 

  • Sleep disorder as a result of increased psychophysiological arousal (i.e., heightened tension levels)

Paradoxical Insomnia

 

  • Complaints about a sleep disorder without objective evidence of one; misperception of actual sleep ability

Idiopathic Insomnia

 

  • Sleep disorder beginning in childhood without a recognizable cause

Insomnia associated with a mental disorder

  • Sleep disorder is the main or a very severe symptom of a mental disorder and requires separate/specific treatment

 

Insomnia due to inadequate sleep hygiene

  • Sleep disorder involving mostly unconscious behaviors incompatible with sleep

 

Behavioral sleep disorder in childhood

  • Sleep disorder due to lack of or inappropriate education regarding bedtime routines

 

Insomnia related to medication/substance abuse

  • Sleep disorder due to regular use of medications/drugs or due to withdrawal effects

Physiological/organic insomnia

  • Residual category for nonspecific/organic sleep disorders
  • Everything that doesn’t quite fit

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