palinopsia /pal·i·nop·sia/ (-op´se-ah) visual perseveration; the continuance of a visual sensation after the stimulus is gone.
palinopsia [pal″in-op´se-ah]
pal·i·nop·si·a (p l  -n p s -)n. Abnormally recurring visual imagery. |
palinopsia [pal″in-op´se-ah]
visual perseveration; the pathologic continuance or recurrence of a visual sensation after the stimulus is gone.
palinopsia
Visual persistence of the image of an object in the absence of its original stimulus. There is usually a latent period, which may amount to several minutes between the visual stimulation and the corresponding mental image. The latter typically disappears within seconds, although it may persist in some cases for several minutes. The subsequent mental image is quite faithful to the original stimulus. It is usually associated with a lesion in the parieto-occipital or temporal-occipital areas as a result of a cerebral infarction, epilepsy, tumour, or brain injury. Syn. visual perseveration.
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