Purpose: Amnestic syndromes are acknowledged to be associated to bilateral hippocampal damage.
Materials And Methods: We briefly report the case of a young man who underwent anterior left temporal lobectomy for a medically refractory temporal lobe epilepsy due to hippocampal sclerosis with an excellent seizure and neuropsychological outcome. Approximately 10 years later, he presented with a subacute severe global amnesia and neuroimaging findings of a damage involving the contralateral mesial temporal lobe structures.
Results: A diagnosis of a possible autoimmune encephalitis was made.
Conclusions: Due to its peculiarities (compared with other cases of bilateral temporal lesions, the damage occurred on two distinct occasions), this case might contribute to shed light on the issue of the possible contralateral reorganization of memory processes subserved by the mesial temporal lobe structures chronically involved in epileptogenesis.
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http://dx.doi.org/10.1080/00207454.2017.1394852 | DOI Listing |
Dev Cogn Neurosci
December 2024
Division of Psychology and Language Sciences, UCL, London WC1H 0AP, UK. Electronic address:
Executive functions can be classified into processes of inhibition, working memory and shifting, which together support flexible and goal-directed behaviour and are crucial for both current and later-life outcomes. A large body of literature has identified distinct brain regions critical to performing each of these functions. These findings are however predicated on a piecemeal and single-task approach.
View Article and Find Full Text PDFNeurology
January 2025
Leonard Davis School of Gerontology, University of Southern California, Los Angeles.
Background And Objectives: Cerebrovascular reactivity (CVR) represents the ability of cerebral blood vessels to regulate blood flow in response to vasoactive stimuli and is related to cognition in cerebrovascular and neurodegenerative conditions. However, few studies have examined CVR in the medial temporal lobe, known to be affected early in Alzheimer disease and to influence memory function. We aimed to examine whether medial temporal CVR is associated with memory function in older adults with and without mild cognitive impairment (MCI).
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea, Republic of (South).
Background: Normative percentile (NP) quantifies brain atrophy by comparing regional brain volumes of a subject against age and sex-matched cognitively normal populations. Accurate intracranial volume (ICV) adjustment is vital in NP quantification to minimize the effect of an individual's head size. However, which intracranial volume adjustment method yields reliable normative percentiles remains unclear.
View Article and Find Full Text PDFBackground: Prostatic malignancy with paraneoplastic subacute encephalitis -A rare syndrome METHOD: We present a case of 76 year old male without any previous comorbidity and addiction who manifested a rapid neuropsychiatric decline with a frontotemporal syndrome over a period of 6 months. He was anemic and cerebrospinal fluid study showed 10 cells with lymphocytic predominance. The extensive workup of csf for infection, malignancy revealed nothing.
View Article and Find Full Text PDFBackground: Clinical diagnosis of frontotemporal dementia (FTD) can be challenging, requiring an accurate tool dedicated to this diagnostic hurdle. Since FTD exhibits distinct regional atrophy patterns on magnetic resonance imaging (MRI), AI-aided automated brain volume analysis could enhance the clinical diagnostic assessment of FTD, including the detection of the disease and the classification of subtypes, which encompass behavioral variant (BV), semantic variant (SV), and progressive non-fluent aphasia (PNFA). In this study, we leverage automated brain volumetry software to approach both FTD detection and the differential diagnosis among its subtypes.
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