Memory, amnesia, and frontal lobe dysfunction
نویسنده
چکیده
Lesions restricted to the frontal lobes do not ordinarily produce an amnesic syndrome in man. However, recent research has demonstrated that amnesic patients who are characterized by signs of frontal lobe pathology show patterns of memory performance that are different from those shown by amnesic patients without frontal signs. This article reviews evidence concerning the influence of frontal lobe pathology on amnesic disorders, discusses different interpretations of this evidence, and draws on research from human and animal neuropsychology as well as cognitive psychology in an attempt to clarify the role of frontal damage in the amnesic syndrome.
منابع مشابه
Confabulation and frontal lobe dysfunction.
A patient is reported who displayed marked confabulation after frontal lobe damage, and whose pattern of performance on memory tests was not typically amnesic. He initially displayed both "fantastic" and "momentary" confabulation, but several months later showed only "momentary" confabulation, which was apparent on direct questioning. This change in type of confabulation was paralleled by impro...
متن کاملSemantic memory and frontal executive function during transient global amnesia.
To assess semantic memory and frontal executive function, two patients underwent neuropsychological testing during transient global amnesia (TGA) and after an interval of 6-8 weeks. In spite of a profound deficit in anterograde verbal and non-verbal memory, semantic memory was normal, as judged by category fluency measures, picture naming, and picture-word and picture-picture matching, and read...
متن کاملRetrograde amnesia in patients with diencephalic, temporal lobe or frontal lesions.
Patients with focal diencephalic, temporal lobe, or frontal lobe lesions were examined on various measures of remote memory. Korsakoff patients showed a severe impairment with a characteristic 'temporal gradient', whereas two patients with focal diencephalic damage (and anterograde amnesia) were virtually unimpaired on remote memory measures. Patients with frontal lobe pathology were severely i...
متن کاملMemory loss from a subcortical white matter infarct.
Clinical disorders of memory are believed to occur from the dysfunction of either the mesial temporal lobe, the mesial thalamus, or the basal forebrain. Fibre tract damage at the level of the fornix has only inconsistently produced amnesia. A patient is reported who suffered a cerebrovascular accident involving the posterior limb of the left internal capsule that resulted in a persistent and se...
متن کاملCOMMENTARY Episodic Memory, Semantic Memory, and Amnesia
Episodic memory and semantic memory are two types of declarative memory. There have been two principal views about how this distinction might be reflected in the organization of memory functions in the brain. One view, that episodic memory and semantic memory are both dependent on the integrity of medial temporal lobe and midline diencephalic structures, predicts that amnesic patients with medi...
متن کامل