Ilusion/Hallucinations

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Author:
angelletta
ID:
115792
Filename:
Ilusion/Hallucinations
Updated:
2011-11-10 15:07:15
Tags:
Neurophthalmology Ch6 IIlusion Hallucinations
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Description:
Neuroophthalmology Ch 6 Ilusion/Hallucinations
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  1. What are phosphenes?
    bright flashes of light with eye movement/dark settings found in Optic neuritis
  2. What are photisms?
    sensations of light/color associated with noise, touch, taste, or smell
  3. Which lobe gives formed hallucinations?
    temporal lobe
  4. Which lobe gives unformed hallucinations?
    occipital
  5. Which lobe produces olfactory/gustatory hallucinations?
    temporal
  6. Which lobe produces unformed and formed hallucinations?
    parietal
  7. What are afterimages after removal of original stimulus called?
    palinsopisa
  8. What is Charles Bonnet syndrome?
    Bilateral vision loss with visual hallucinations. Pt is aware that these are not real.
  9. Inablity to recognize objects
    Location of lesion?
    • agnosia
    • occipital lobe/temporal interruption affecting inferior longitudinal fasiculi
  10. What is the inability to recognize familiar faces
    Location of the lesion
    • prosopagnosia
    • bilateral occipital lobe damage/ right inferior occipital lobe
  11. loss perception of visual motion
    akinetopsia
  12. Loss of information b/w occipital lobe and angular gyrus of parietal lobe via splenum of the corpus callosum causes what?
    lesion at angular gyrus
    • Alexia without agraphia
    • Alexia with agraphia
  13. What is the loss of color discrimination?
    location of the lesion
    • cerebral achromatopsia
    • bilateral parietal or occipital lesions
  14. What is optic ataxia?
    person reaches for object as if they were blind
  15. What is Allesthesia?
    things looked inverted/flipped or rotated
  16. What is Anton syndrome?
    cortical blindness but denies blindness
  17. What is Riddoch Phenomenon?
    motion of perception in a blind hemifield

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