Term
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Definition
| Collection of blood material that blocks the flow of blood |
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Term
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Definition
Caused by blocked or interrupted blood supply to the brain.
Blockages/interruptions may be caused by 2 kinds of arterial diseases:
1. Thrombosis
2. Embolism |
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Term
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Definition
| a travelling mass of arterial debris or a clump of tissue from a tumor that gets lodged in a smaller artry and blocks the flow of blood |
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Term
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Definition
Caused by bleeing in the brain due to ruptured blood vessels
Ruptures may be due to:
- Intracerebral - w/in the brain
- Extracerebral - w/in the meninges resulting in subarachnoid, subdural, & epidural varieties |
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Term
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Definition
- Neurologically based Language disorder (vs. neurological speech disoders such as: apraxia & dysarthria)
- caused by strokes (ischemic or hemorrhagic), brain trauma, intracranial tumors, & infections
- loss or impairment of language caused by a recent brain injury
- comprehension and expression of language, along with reading & writing, may be impaired |
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Term
| Types of Non-Fluent Aphasias |
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Definition
Characterized by: limited, agrammatic, effortful, halting, & slow speech with impaired prosody
- Broca's aphasia
- Transcortical motor aphasia (TMA)
- Mixed transcortical aphasia
- Global aphasia |
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Term
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Definition
Characterized by: relatively intact fluency, generally less meaningful, or even meaningless speech
Speech is generally: flowing, abundant, easily initiated, & well articulated w/ good prosody & phrase length
- Wernicke's aphasia
- Transcortical sensory aphasia (TSA)
- Conduction aphasia
- Anomic aphasia |
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Term
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Definition
Brodmann's areas 44 & 45 in the posterior inferior gyrus of the L-hemi
- supplied by: upper division of the Middle Cerebral Artery (MCA) |
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Term
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Definition
Posterior portion of the superior temporal gyrus in the L-hemi
- supplied by: posterior branch of the Left MCA (middle cerebral artery) |
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Term
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Definition
(Note: typically aphasi is produced by cortical damage)
- in recent yrs aphasia, due to sub-cortical damage, has been reported
- extensive subcortical damage, w/ possible involvement of L cortical areas, may underlie Subcortical Aphasia
- lesons in areas surrounding the Basal Ganglia & the Thalamus have been linked to Subcortical Aphasia |
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Term
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Definition
a LOSS of previously Acquired reading skills dueto recent brain damage
(Note: some patients with Aphasia manifest alexia) |
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Term
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Definition
the loss OR impairment of the normally acquired writing skills due to lesions in the foot of the second frontal gyrus (aka: Exener's Writing Area)
(Note: various kinds of writing problems are seen in patients w/ aphasia) |
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Term
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Definition
Impaired understanding of the meaning of certain stimuli even though there is no peripheral sensory impairment
Patients can see, fee, & hear stimuli but cannot understand their meaning
Note: impairment is often limited to one sensory modality
There are several forms:
- Auditory Agnosia
- Auditory Verbal Agnosia
- Visual Agnosia
- Tactile Agnosia |
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