Functional changes in temporal lobe activity during transient global amnesia.

نویسندگان

  • Kevin S LaBar
  • Darren R Gitelman
  • Todd B Parrish
  • M Marsel Mesulam
چکیده

The integrity of temporal lobe activity during and after recovery from transient global amnesia (TGA) was assessed in a case study using functional MRI. TGA was associated with scene-encoding deficits in a temporolimbic circuit that recovered over time. Frontoparietal areas recruited during the amnesic state may signify a compensatory reliance on visuospatial or working memory strategies. Reduction of extrastriate cortex responses over repeated testing sessions possibly indicates intact visual priming in TGA.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Transient global amnesia mimics: Transient epileptic amnesia

We describe the case of a 79-year-old patient referred for suspected transient global amnesia, after an episode of anterograde amnesia which lasted 90 min. An EEG, performed after the episode, showed bilateral temporal electrographic seizures, orienting the diagnosis toward a transient epileptic amnesia. Transient epileptic amnesia is defined by temporal lobe epilepsy characterized by recurrent...

متن کامل

Transient global amnesia and left frontal haemorrhage.

A patient developed spontaneous, acute, dominant frontal lobe haemorrhage neighbouring on a zone of pre-existing post-traumatic encephalomalacia manifesting clinically as transient global amnesia. Amnesia can be secondary to disease of the frontal lobe, affecting pathways interconnecting the basal forebrain and hippocampus of the temporal lobe.

متن کامل

Transient epileptic amnesia

Transient epileptic amnesia has been considered a syndrome of mesial temporal lobe epilepsy characterized by (1) recurrent episodes of isolated memory impairment of epileptic cause (ictal or postictal) while other cognitive functions remain intact; (2) interictal memory disturbances of accelerated long-term forgetting and autobiographical and topographical amnesia; and (3) late age of onset wit...

متن کامل

Transient epileptic amnesia secondary to hippocampal dysplasia mimicking transient global amnesia

Transient epileptic amnesia (TEA) is a recently recognized subtype of temporal lobe epilepsy. TEA is characterized by brief, recurrent attacks of amnesia in late middle to old-aged subjects, averaging 60 years of age [1,2]. In nearly half the cases, patients complain of long term accelerated forgetting and autobiographical memory impairment in 70% [2]. Bartsch and Butler proposed diagnostic cri...

متن کامل

Neuropsychological and SPECT scan findings during and after transient global amnesia: evidence for the differential impairment of remote episodic memory.

A patient had neuropsychological testing during, and at two days and seven weeks after a transient global amnesia (TGA) attack. During the attack she exhibited a characteristically profound anterograde amnesia but a limited remote memory loss; the most striking impairment was a deficit in personal episodic memory revealed by her performance on the Autobiographical Memory Interview. Personal and...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Neurology

دوره 58 4  شماره 

صفحات  -

تاریخ انتشار 2002