Attention

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Author:
jeanbapt
ID:
253537
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Attention
Updated:
2013-12-16 22:50:23
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Neuro final attention
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neuro final attention
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  1. Attention
    the preferential processing of sensory information
  2. How does Kinsbourne describe the key element of attention?
    ignoring irrelevancies
  3. Broadbent's Filter Theory of Attention
    there must be some mechanism that selectively organizes and prioritizes the incoming information
  4. process of filtering
    input channels→ senses (eye, ear) → FILTER → selected input for attention

    (filter selection based on physical characteristics only)
  5. filter
    the reticular activating system (RAS) of the reticular activating formation
  6. Broadbent proposed a filter
    • limited processing capacity, causing a bottleneck of sensory input
    • there must be a sensory filter (a buffet for filtering)
    • the filter occurs to the signal, prior to semantic analysis
    • unprocessed stimuli fades
  7. 7 general attention types
    • attentional awareness
    • selective attention
    • divided attention
    • attention switching
    • spare attention
    • attention fatigue
    • inattention
  8. Model of attention
    • awareness/alerting reactions: brainstem
    • motor orientation: cerebellum
    • novelty/excitement of learning: hippocampus
    • supervising/organizing it all - as well as controlling even when not interesting: frontal lobe
  9. 3 effects of attention
    • aids in detection of information
    • increases speed of reaction time
    • maintains alertness, awareness, and awakedness
  10. change in brain activity due to attention
    the flashlight analogy
  11. The Flashlight analogy
    • •attention works like a spotlight - moving to illuminate objects (brain regions) of interest
    • •attention movement is independent of sensory position (attention shifts even though vision or listening sphere remains the same)
  12. Parts of the brain involved with attention:
    • pulvinar of the thalamus
    • superior/inferior colliculi
    • prefrontal and frontal lobes
    • temporal lobe
  13. frontal lobes enable us to:
    • pay attention to tasks with focus
    • concentration
    • planning
    • decision making
    • learning
    • remembering
  14. frontal lobes control:
    our emotions and cause us to behave in given situations

    anger, frustration, and irritability are regulated in the frontal lobes
  15. Three characteristics of Attention Deficit Disorder
    • inattentiveness
    • hyperactivity
    • impulsivity
  16. Two types of ADD
    • hyperactive type (ADHD)
    • inattentive type (ADD-IT)

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