chapter 4

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casiemarie
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238193
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chapter 4
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2013-10-01 16:21:51
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autonomic nervous sytem
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exam 1 study guide
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  1. sympathetic nervous system
    • organize and mobilize in response to threat
    • activates the body to cope with demands

    *emotional stress and physical emergencies
  2. parasympathetic nervous sytem
    • slows the activity of most organs to conserve energy
    • activates digestion to renew energy
  3. end goal of the ANS
    • HOMEOSTASIS
    • diffusion of oxygen through body, keeps the heart beating
    • keep the liver releasing glucose 
    • allow the pupils to adjust to light
    • allow the lungs to take in appropriate oxygen levels
    • aide digestion
  4. Autonomic Space
    accounts for much of the error variance that has traditionally plagued psychophysiological studies
  5. directional fractionation
    individuals having two conflicting physical responses to a stressful or alarming situation
  6. principle neurotransmitters of the ANS
    • acetylcholine (ACh)
    • norephinephrine (NE)
  7. acetylcholine (ACh)
    • largely releaseed by the parasympathetic system
    • atropine black ACh sites, inhibits vagus function
  8. norephinephrine (NE)
    • largely released by the sympathetic system
    • alpha (vasoconstriction)
    • beta (increase in cardiac activity) (treat anxiety and panic disorders)
  9. psychophysiology
    branch of psychology concerned with the physiological bases of psychological processes
  10. EGG
    • Electrogastrography
    • gastric activity
    • VERY SLOW, hard to read
  11. EDA
    • Electrodermal Activity 
    • skin conductance, measure of sweat gland activity 
    • purely sympathetic activity
  12. ECG/EKG
    • Electrocardiography
    • strongest electrical signal
    • cardiac cycle
    • HRV (heart rate variability)
  13. EMG
    • Electromyography 
    • muscles produce electrical activity
  14. EOG
    • Electrooculography 
    • visual fixation, muscle control of the eye
  15. respiration
    • breathing rate (RR)
    • ampplitude (tidal volume TV)
    • 6 breaths / minute
  16. EEG
    • Electroencephalograph
    • recording of electrical activity along the scalp
    • can help diagnose seizures
  17. fastest to slowest signals ECG, EGG, EEG
    EEG, ECG, EGG
  18. Respiratory Sinus Arrhythmia
    • variation in heart rate that occurs during a breathing cycle
    • increase with inhalation
    • decrease with exhalation
    • controlled by centers in the medulla oblongata
  19. heart rate variability
    • time interval between heart beats varies
    • beat to beat intervals
  20. 9 principles;1
    nervous system functions to produce movemen
  21. 9 principles;2
    • the nervous system functions are constantly changing, an attribute called neuroplasticity
    • learn, unlearn, relearn
  22. 9 principles;3
    many of the brains circuits are crossed
  23. 9 principles;4
    • CNS functions on multiple levels
    • brainstem, midbrain, limbic, cortical
  24. 9 principles;5
    brain is both symmetrical and asymmetrical
  25. 9 principles;6
    • brain systems are organized both hierarchially and in parallel
    • *vision: seeing colors, shapes, depths, sizes, lighting, movements
  26. 9 principles;7
    • sensory and motor divisions exist throughout the nervous system
    • *input->integration->output
  27. 9 principles;8
    • functions in the brain are both localized and distributed
    • memory, language
  28. 9 principles;9
    • nervous system works by juxtaposing excitation and inhibition
    • *produce and prevent movement
    • *parkinsons (uncontrollable motions)

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