Palinoptic phenomena as an error mechanism in resolving alexia without agraphia. A case report.
Palinoptic, visual perseverative, or prolonged positive after-image phenomena have most often been met in right-sided occipital pathology. Less frequent with left-sided lesions they can be associated with the alexia without agraphia syndrome (with or without color naming deficit or hemifield loss). This is illustrated by our case in which rapidly fading visual reduplicative sensations--rather than linguistic incompetence--were apparently responsible for most of his paralexic errors.
D000360:Afterimage / Q000502:physiology*; D002544:Cerebral Infarction / Q000150:complications* / Q000503:physiopathology; D004411:Dyslexia, Acquired / Q000209:etiology / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009778:Occipital Lobe / Q000098:blood supply*