AI Article Synopsis
Article Abstract
Objective: To compare patterns of brain atrophy in fronto-temporal dementia (FTD) and Alzheimer's disease (AD) since atrophy in individual areas may not be sufficiently specific as diagnostic marker.
Methods: Frontal, temporal and hippocampal atrophy was measured from MRI of 10 FTD patients, 27 AD, and 27 controls. Corrected atrophy and asymmetry were computed (W-scores).
Results: FTD had mild atrophy in the hippocampus (average W-score=-1.3), severe in the frontal (W-score=-2.4) and very severe in the temporal lobes (W-score=-2.9). AD had moderate atrophy in the hippocampus and temporal lobes (W-score=-1.8 and -1.9, respectively), and very mild frontal atrophy (W-score=-0.9). Atrophy was more asymmetrical in FTD (left more atrophic) than in AD patients, particularly in the temporal lobes. A discriminant function including the asymmetry values of frontal and temporal regions could separate FTD from AD with 90% sensitivity and 93% specificity.
Conclusions: FTD is characterized by a specific pattern of atrophy, more useful than atrophy of single regions in the differential diagnosis.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0197-4580(02)00045-3 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Resting-state fMRI activation is associated with parent-reported phenotypic features of autism in early adolescence.
Front Child Adolesc Psychiatry
November 2024
Department of Psychology, Palo Alto University, Palo Alto, CA, United States.
Introduction: Autism Spectrum Disorder (ASD) is characterized by deficits in social cognition, self-referential processing, and restricted repetitive behaviors. Despite the established clinical symptoms and neurofunctional alterations in ASD, definitive biomarkers for ASD features during neurodevelopment remain unknown. In this study, we aimed to explore if activation in brain regions of the default mode network (DMN), specifically the medial prefrontal cortex (MPC), posterior cingulate cortex (PCC), superior temporal sulcus (STS), inferior frontal gyrus (IFG), angular gyrus (AG), and the temporoparietal junction (TPJ), during resting-state functional magnetic resonance imaging (rs-fMRI) is associated with possible phenotypic features of autism (PPFA) in a large, diverse youth cohort.
View Article and Find Full Text PDFSpecification of claustro-amygdalar and palaeocortical neurons and circuits.
Nature
January 2025
Department of Neuroscience, Yale School of Medicine, New Haven, CT, USA.
The ventrolateral pallial (VLp) excitatory neurons in the claustro-amygdalar complex and piriform cortex (PIR; which forms part of the palaeocortex) form reciprocal connections with the prefrontal cortex (PFC), integrating cognitive and sensory information that results in adaptive behaviours. Early-life disruptions in these circuits are linked to neuropsychiatric disorders, highlighting the importance of understanding their development. Here we reveal that the transcription factors SOX4, SOX11 and TFAP2D have a pivotal role in the development, identity and PFC connectivity of these excitatory neurons.
View Article and Find Full Text PDFDisease-State Dependent Associations Between Intrinsic Brain Function and Symptoms of Fatigue, Depression, and Anxiety in Crohn's Disease.
Inflamm Bowel Dis
January 2025
Department of General Psychiatry, Center for Psychosocial Medicine, Heidelberg University Hospital, Heidelberg University, Heidelberg, Germany.
Background: Extraintestinal symptoms (EIS) in inflammatory bowel diseases, including fatigue, depression and anxiety, are highly prevalent, but poorly understood. Alterations of brain function may contribute to EIS, but their association with disease activity is unclear. This study analyzed intrinsic neural activity (INA) of individuals with Crohn's disease (CD) in different disease states and examined the relationship between INA and EIS.
View Article and Find Full Text PDFStructural and functional alterations in the brain gray matter among Tourette syndrome patients: a multimodal meta-analysis of fMRI and VBM studies.
J Neurol
January 2025
Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, 610041, China.
Background: Tourette syndrome (TS) is a prevalent neurodevelopmental disorder with an uncertain etiology. Numerous neuroimaging studies have investigated patients with TS, but their conclusions remain inconsistent. The current study attempted to provide an unbiased statistical meta-analysis of published neuroimaging studies of TS.
View Article and Find Full Text PDFEnhancing prosthetic hand control: A synergistic multi-channel electroencephalogram.
Wearable Technol
November 2024
Embedded Systems and Robotics Lab, Tezpur University, Tezpur, Assam, India.
Electromyogram (EMG) has been a fundamental approach for prosthetic hand control. However it is limited by the functionality of residual muscles and muscle fatigue. Currently, exploring temporal shifts in brain networks and accurately classifying noninvasive electroencephalogram (EEG) for prosthetic hand control remains challenging.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!