Psychology Test 2

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oaboss
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106563
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Psychology Test 2
Updated:
2011-10-05 01:53:32
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Psycology
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Psychology test 2
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  1. Neurons
    • -Communication
    • Soma-Cell Body
    • Dendrites-Recieve
    • Axon-Transmit Away
  2. Insulation and Information Transfer
    Myelin Sheath- Speeds up transmission

    Terminal Buttons- End of axon, secrete neurtransmitters

    Synapse- Point at which neurons interconnect
  3. Neurotransmitters
    Chemical Messengers
  4. Hodgkin & Huxley
    • --Fluids inside and outside of neuron
    • ---Electrically charged particles (ions)

    --Neuron at rest -- negatice charge on inside compared to outside
  5. Neural Impulse: Action Potential
    • Stimulation causes cell membrane to open
    • ------+ sodium ion flows in
    • Shift in electrical charge travels along Neuron
    • ------The Action Potential
    • -------All-or-none law
  6. Synaptic Cleft; Pre & Post
    • Presynaptic Neuron
    • ---Synaptic Vesicles
    • ------Neurotransmitters

    • Postsynaptic Neuron
    • ---Receptor Sites
  7. Postsynaptic Potential
    • PSP - Change of voltage at receptor site
    • --Not all or None
    • --Changes the probability of the postynaptic neuron firing
    • ------+ Volt. Shift--Excitatory PSP
    • ------ (-) Volt Shift--Inhibitory PSP
  8. Neurons require what to Fire
    Integration of Signals
  9. Agonist
    Mimics Neurotransmitter action
  10. Antagonist
    Opposes action of neurotransmitter
  11. Neurotransmitter 5 total
    • 1.Acetylcholine
    • 2.Dopamine
    • 3.Norepinephrine
    • 4.Serotonin
    • 5.Endorphins
  12. Central nervous system is located where?
    Brain and spinal cord
  13. Peripheral nervous system Lies where to the Central nervous system
    Outside
  14. Affent is...
    Efferent is...
    • Afferent = Toward the CNS
    • Efferent = Away from the CNS
  15. Somatic nervous system
    Voluntary muscles and sonsory receptors
  16. Autonomic Nervous System (ANS)
    Automatic involuntary functions

    Sympathetic = Fight or Flight

    Parasympathetic = Stop
  17. Brain Regions;
    Hind Brain
    MidBrain
    ForeBrain
    Hindbrain- Vital funtions- medulla, pon, cerebellum

    Midbrain-Sensory functions- dopaminergic projections

    Forebrain- emtion, complex though
  18. Cerebral Hemispheres'
    ==Left/Right
    Left Hemishpher= Verbal processing: Language, speech, reading, writing

    Right Hemisphere= NonVerbal processing: Spatial, Musical, visual recognition
  19. Four Lobes
    • 1. Occipital = Vision
    • 2. Parietal = Somatosensory
    • 3. Temporal = Auditory
    • 4. Frontal = Movement, executive control systems
  20. EEG
    Monitoring of brain electrical activity
  21. 4 Stages of Brain=Waves

    BAT D
    • 1. Beta (13-24 cps)
    • ----- Awake, Problem solving
    • 2. Alpha (8-12)
    • ----- Blank Mind
    • 3. Theta (4-7)
    • ----- Light Sleep
    • 4. Delta (>4cps)
    • -------Deep Sleep
  22. Circadian Rythms
    • -Biological 24 hour cycle
    • --Regulation of Sleep /other Body functions
    • ---
  23. Physiological pathway of the Biological Clock
    Light levels > Retina > Hypothalamus > Pineal Gland> >Secreation of melatonin
  24. Define:
    Electroencephalograph (EEG)
    Electromyograph
    Electrooculograph
    • 1. EEG- Brain electrical activity
    • 2.Electromyograph- Muscle activity
    • 3. Electrooculograph- Eye movements
  25. Cycling through sleep;
    -----Stages 1 to 4
    • Stage 1: Alpha 2 Theta 1-7
    • ------Hypnic Jerks
    • Stage 2: Sleep spindles 10-25
    • Stage 3 & 4: Slow-wave sleep 30
    • Stage 5: REM, eeg similar to away.
  26. Why do we Sleep?
    Sleep helps animals to restore energy and other bodily resources
  27. Sleep Deprevitation: 3 Types
    • Complete
    • --- 3 to 4 days max
    • Partial or Sleep restriction
    • -- Impaired attention, reaction time
    • Selective
    • ---Rebound Effect
  28. Insomina
    Difficulty falling or staying asleep
  29. Narcolepsy
    Falling asleep uncontrollably
  30. Sleep Apnea
    Reflexive gasping for air that awakens
  31. Somnambulism
    Sleepwalking
  32. Hypnosis and the Effects:
    --A systematic procedure that increases suggestibility.

    • Effects
    • - Anesthesia
    • - Sensory Dist.
    • -Disinhibition
    • -Posthypnotic suggestions
  33. Meditation
    Heighten awarenes and bring mental processes under greater voluntary control
  34. Narcotics
    Sedatives
    Stimulants
    Hallucinogens
    Cannabis
    Alcohol
    • -Pain relieving
    • -Sleep inducing
    • -Increase CNS activity
    • -Distort sensory and perceptual experience
    • -Mild euphoria

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