Antons syndrome What is Antons syndrome and where are the lesions associated with it? Anton’s syndrome is the combination of cortical blindness and denial of blindness. It is typically associated with bilateral posterior cerebral artery infarctions producing “cortical” blindness plus memory impairment.
Balints Syndrome What is Balints syndrome and where is the responsible lesion? Balint’s syndrome includes misreaching under visual guidance (optic ataxia), failure to scan and integrate an entire visual scene or picture (simultanagnosia), and ocular apraxia (“sticky fixation”). Patients with these symptoms usually have bilateral lesions of the occipitoparietal junctions.
What is Ganser Syndrome? Ganser syndrome is sometimes known as the syndrome of approximate answers or pseudostupidity . It is most often observed in a forensic setting or where marked psychosocial stress is present. The key features are approximate answers (referred to as vorbeireden ), clouding of consciousness, memory or personal identity loss, somatic conversion symptoms, and hallucinations. Duration of symptoms is …
Geschwinds Syndrome What is Geschwinds syndrome and where is the responsible lesion? Geschwind’s syndrome includes a cluster of personality traits: circumstantiality (excessive verbal output, stickiness, hypergraphia), altered sexuality (loss or alteration of sexual interests and a craving for overly close interpersonal relationships), and intensified mental life (deepening of many emotions, often resulting in religious or philosophical preoccupations; …
Gerstmanns Syndrome What are the features of Gerstmanns syndrome and where is the lesion responsible for it? Gerstmanns syndrome is characterized by four primary symptoms: acalculia, agraphia or dysgraphia, an inability to identify fingers (finger agnosia), and right–left confusion. These occur in the absence of additional language deficits. The underlying lesion includes the angular gyrus in the dominant hemisphere. …
Alien hand syndrome What is the alien hand syndrome , where is the lesion that produces it, and what is the vascular territory of lesions that can produce it? With this syndrome, an individual’s nonparalyzed hand appears to carry out activities that cannot be controlled by the individual. It can include behaviors like inappropriate grasping, taking off …
Behavioral alterations with lesions of the dorsolateral prefrontal cortex What are the behavioral alterations noted with lesions of the dorsolateral prefrontal cortex ? Dorsolateral prefrontal lesions are associated with depression and apathy, reduced verbal fluency (dominant side), reduced nonverbal fluency (nondominant side), psychomotor slowing, poor set shifting, impaired abstraction and logical thinking, inability to understand humor, poor …
Behavioral alterations with lesions of the dorsolateral prefrontal cortex Read More »