ideokinetic apraxia

Ideokinetic apraxia is a neurological condition characterized by the inability to perform specific skilled movements on command, despite having the necessary motor power and mental capacity. This occurs due to an interruption in the brain's association tracts, which disrupts the coordination between thought and action.1

Individuals with ideokinetic apraxia may be unable to perform an action like whistling when asked, but can do so automatically. They might also complain of not being able to use their hand, yet use it to swat a mosquito. This condition is typically caused by a lesion in the supramarginal gyrus of the cerebral cortex. Apraxia, in general, is the inability to carry out purposeful or skilled acts when motor power and mental capacity are intact.1