test 2 other stuff Flashcards

1
Q

what are the limits of attention (texting and driving)

A
  • 18% of accidents involve driving with phone, mostly texting
  • same impairment as 0.10 blood alcohol level
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2
Q

what is hemineglect

A

syndrome in which patients ignore or do not pay attention to information on one side of space (usually left) and act as if that side of the world does not exist, despite having intact motor and sensory functioning

-damage to right parietal lobe

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3
Q

studies for hemineglect patients

A

neglect patients fail to cancel lines on side of page contralateral to damage

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4
Q

how do we know neglect is a disorder of attention, not perceptions?

A
  • neglect patients still activate visual regions in occipital lobes that they claim not to be aware of
  • they are often able to detect objects on the ignored side if cued there
  • affects auditory and tactile judgments as well as vision
  • extinction suggests different perceptual representations are competing for attention
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5
Q

explain object v. space based neglect

A
  • some neglect patients attend to objects on the left side of space but omit to attend to one half of the object itself (object-based neglect)
  • forms a double dissociation with space-based neglect
  • adds to evidence that we have object and space based attention
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6
Q

explain object based and space based neglect studies

A

space-based: patient ignores the A’s to circle on left side

object-based: patient copies right side of all objects

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7
Q

how is object based neglect different

A

patients with object based neglect cannot detect differences on left side of an object even when falling into right side of space

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8
Q

what are hemispheric differences and competition in hemineglect

A
  • neglect is more common following right parietal damage than left parietal damage
  • may have to do with hemispheric differences regarding spatial frequency and hemispheric specialization for attention
  • neglect may be due to bias towards one hemisphere/direction (neglect symptoms are stronger when patients cancel lines rather than erase them, extinction supports this idea)
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9
Q

what hemisphere is more important for attention

A

right

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10
Q

what is the accurate fasciculus

A

connection between wernicke’s and brook’s areas, damage to this causes conduction aphasia

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