Lecture 7: From lesions to impairments Flashcards

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1
Q

What are some of the common impairments in stroke patients?

A
  • Motor deficits
  • Dysphagia: Difficulty swallowing
  • Visual impairments
  • Aphasia: Language deficits
  • etc…
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2
Q

What determines which deficit you might get?

A

It depends on the area of the brain that is affected as well as the extent of the damage

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3
Q

A paper called Predicting Language Outcome and Recovery after Stroke was presented in class, what was it about?

A
  • Specifically in aphasia:
    • difficulty to comprehend and produce speech
    • Many types of aphasia
  • There is a relationship between lesion site and outcome
  • After a lesion, specialist would evaluate speech of the patient:
    • See output
      • rate of speech
      • grammar
      • content
      • writing
    • See comprehension
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4
Q

If you have to patients with damage in the same brain region, will them necessarily have the same symptoms?

A

No, for example, aphasia might result from many different lesion sites. Moreover, fMRI studies have shown that the main source of subject variability to tasks is that there is a limited number of different ways of doing the task.

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5
Q

How do we know that many brain regions support both speech comprehension and production?

A
  • Through the study of lesions and functional imaging
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6
Q

When does the effect of a lesion is less pronounced?

A

When there is alternative paths for the information to reach a certain area, the lesion might be less pronounced.

Also, if the lesion is smaller, this might affect less the patient.

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