Neurobiology of cognition Flashcards Preview

Psychiatry week 4 > Neurobiology of cognition > Flashcards

Flashcards in Neurobiology of cognition Deck (11):
1

What is the function of wernickes area ?

It is the sensory area. It helps in understanding speech and using the correct words to express our thoughts.

2

What is the function of broacs area 

Broca's area is the motor speech area and it helps in movements required to produce speech.

 

3

What is the location of broacs area and what is the location of wernickes area ?

  • Broacs area - is a region in located in the frontal lobe of the dominant hemisphere, usually the left
  • Wernickes area - classically located in the posterior section of the superior temporal gyrus (STG) in the (most commonly) left cerebral hemisphere. 

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4

Define aphasia 

inability (or impaired ability) to understand or produce speech, as a result of brain damage to the frontal, temporal &/or parietal lobes of the dominant hemisphere 

5

Describe receptive aphasia (also known as werickes aphasia) 

Obv its due to damage to wernickes area 

  • Patients speech is fluent, but the words which are spoken are incorrect (can vary from a few incorrect words to complete nonsense)
  • Those whom recover from this describe it as not being able to understand what people are saying

6

Describe expressive aphasia (also known as brocas aphasia)

  • Patients are able to understand language (wernickes area still working) but they lose fluency of their speech 
  • Those whom recover describe it as being unable to get the words out despite knowing what they want to say 

7

Where is the angular gyrus located and what functions is it involved in ?

  • Located in the parietal lobe near the superior edge of the temporal lobe 
  • It is involved in a number of processes related to - language, spatial cognition, memory retrieval, attention & theory of mind 

8

Describe nominal aphasia and the type of lesion it is due to 

  • This is when patients are unable to name familiar objects, but language is otherwise preserved 
  • When this type of aphasia presents on its own then it suggests a lesion to the angular gyrus (inferior parietal lobe lesion)

9

This is covered in another set of flashcards but recall that neurofibrillary tangles and amyloid plauqes are key to the pathogenesis of alzhimers disease

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10

Just look over this, it should be covered in neuro (hopefully)

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11

What is the function of each of the following:

  1. Striatal interneurones
  2. Nucleus basalis of Meynert 
  3. Medial septal nucleus 

 

  1. Striatal interneurones (motor control)
  2. Nucleus basalis of Meynert (attention/arousal)
  3. Medial septal nucleus (learning & memory)