HP4 Lecture 6

1

Which of the following statements regarding aphasia is INCORRECT?


  Stroke is a potential cause of aphasia.

  Fluent aphasia is often associated with a posterior brain lesion.

  Aphasia is defined as a disturbance in speech as a result of brain damage.

  Language is the process of translating thoughts into linguistic elements.

  An inability to write as a result of carpal tunnel syndrome is not an example of (graphic) aphasia.


Aphasia is defined as a disturbance in language as a result of brain damage.

2

A patient presents with a non-fluent aphasia. Which of the following is MOST LIKELY to be true?


  The patient has disrupted blood flow to the superior division of the middle cerebral artery.

  The patient has a problem with selection of language.

  The patient has a posterior lesion of the brain.

  The patient has damage to the angular gyrus.

  The patient will also experience visual disturbances.


The others are all associated with Wernicke's-type aphasias.

3

The lateralization of language:


  can be taken as support for the left/right polarity model of the brain.

  means that often Wernicke's and Broca's areas can be found on opposite sides of the brain.

  can be clearly seen on functional CT scans of the brain.

  is closely associated with which hemisphere is 'dominant' in a given individual.

  means that language is never bilaterally controlled in the brain.

4

Which of the following statements about Wernicke's aphasia is CORRECT?


  It often involves 'telegrammatic' language.

  A deficiency in language comprehension is an unlikely complication.

  It often co-occurs with motor weakness.

  Patients with this type of aphasia may use phonemes that 'sound correct' but comprise nonsense words.

  It is synonymous with "dysnomic" aphasia.

5

Which of the following statements about Broca's aphasia is INCORRECT?


  Patients with this type of aphasia have difficulties producing rather than selecting language.

  Patients may repeat some words multiple times while making the effort to speak.

  Language output will appear highly effortful.

  Lesions to Broca's area may present with contralateral face and arm weakness.

  In left-handed patients, it most often results from lesions to the right hemisphere.


In 70% of left-handed, language is still represented in the left (i.e. non-dominant) hemisphere.

6

When recovering from a lesion to a language centre:


  patients later in life are often considered for hemispherectomies.

  contralateral organisation is often seen when the lesion occurs later in life.

  early hemispherectomies (e.g. before two years of age) always result in major developmental difficulties.

  adult stroke patients typically do not show reorganisation around the lesion.

  fMRI may be used to track the progress of recovery.