Spatial disorientation in right-hemisphere infarction: a study of the speed of recovery.

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Abstract
Patients (16) with an infarct in the posterior region of the right hemisphere were tested at fixed intervals after a stroke (2 wk, 6 wk, 3 mo., 6 mo., 1 yr) with the rod orientation test and the line orientation test. All patients initially showed spatial disorientation on the rod orientation test, while only 3 had a defective performance on the line orientation test. The recovery on the rod orientation test was parallel with the neurological improvement. Recovery mainly took place in the first 6 mo. after the stroke. Most patients then performed at a normal level. A relation between the size of the lesion (assessed from CT [computed tomography] scans) and the speed of recovery was found.

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