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Features of ideational apraxia
What are the features of ideational apraxia and where is the responsible lesion?
- Ideational apraxia is the inability to perform a sequence of learned acts.
- These are multistep acts such as making coffee, preparing a meal, or mailing a letter.
- It is usually seen with either diffuse brain injury, delirium, and dementia or with frontal lobe lesions.
- It is thought to represent a primary disturbance of attention and executive function that interferes with the coherence of sequenced motor output.
Ideational apraxia refers to a disorder characterized by difficulties in planning and sequencing complex motor actions. It can be observed when patients are asked to perform tasks such as lighting a candle or mailing a letter.
It is often associated with dominant hemisphere parietal lobe lesions and may be accompanied by other symptoms such as fluent aphasia, constructional apraxia, and elements of Gerstmann’s syndrome.
The improvement over time and the nature of recovery in ideational apraxia are not well understood.
Here is the table with comparison of the types of apraxias
Forms of Apraxia
| Poor Actions | Lesion Location | Associated Conditions/Features | |
|---|---|---|---|
| Ideational apraxia | Sequence of learned acts | Diffuse or frontal | Dementia, delirium |
| Ideomotor apraxia | Learned familiar movements to command | Dominant inferior parietal | |
| Sympathetic apraxia | Left-hand ideomotor apraxia | Left frontal | Right HP, Broca’s aphasia |
| Anterior callosal apraxia | Left-hand ideomotor | Corpus callosum | None |
| Limb-kinetic apraxia | Distal limb reduced dexterity and coordination | Contralateral SMA |
HP , Hemiparesis; SMA , supplementary motor area.
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