[Memory disorders and symptoms of frontal dysfunction in 29 patients operated on for an aneurysm of the anterior communicating artery].

Twenty-nine patients operated for an aneurysm of the anterior communicating artery have been submitted to short-term and long-term memory tests and to tests said to be sensitive to frontal lobe dysfunction; anosognosia was also studied. Their performance, as compared to that of 29 matched control subjects, revealed: (a) that this neurological condition induces often memory deficits (with anosognosia) and, even more often, signs of frontal dysfunction; (b) that these deficiencies are not homogeneous, however; and (c) that the classical amnesic syndrome can be observed in some cases. It appears useful to make an in-depth analysis of memory deficits of this kind of patients to reach a better understanding of normal memory processes.