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| http://dx.doi.org/10.3389/fneur.2020.579079 | DOI Listing |
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Unveiling the Content of Frontal Feedback in Challenging Object Recognition.
Neuroimage
January 2025
School of Electrical and Computer Engineering, College of Engineering, University of Tehran, Tehran, Iran; School of Cognitive Sciences, Institute for Research in Fundamental Sciences, Tehran, Iran. Electronic address:
Object recognition under challenging real-world conditions, including partial occlusion, remains an enduring focus of investigation in cognitive visual neuroscience. This study addresses the insufficiently elucidated neural mechanisms and temporal dynamics involved in this complex process, concentrating on the persistent challenge of recognizing objects obscured by occlusion. Through the analysis of human EEG data, we decode feedback characteristics within frontotemporal networks, uncovering intricate neural mechanisms during occlusion coding, with a specific emphasis on processing complex stimuli such as occluded faces.
View Article and Find Full Text PDFIn-vivo high-resolution χ-separation at 7T.
Neuroimage
January 2025
Laboratory for Imaging Science and Technology, Department of Electrical and Computer Engineering, Seoul National University, Seoul, Republic of Korea. Electronic address:
A recently introduced quantitative susceptibility mapping (QSM) technique, χ-separation, offers the capability to separate paramagnetic (χ) and diamagnetic (χ) susceptibility distribution within the brain. In-vivo high-resolution mapping of iron and myelin distribution, estimated by χ-separation, could provide a deeper understanding of brain substructures, assisting the investigation of their functions and alterations. This can be achieved using 7T MRI, which benefits from a high signal-to-noise ratio and susceptibility effects.
View Article and Find Full Text PDFDeviant sound frequency and time stimuli in auditory oddball tasks reveal persistent aberrant brain activity in patients with psychosis and symptomatic remission.
J Psychiatr Res
January 2025
Department of Psychiatry and Clinical Psychology, Clínica Universidad de Navarra, Pamplona, Spain; Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain.
The detection of rare or deviant stimuli shares common brain circuits involved in temporal processing and salience, critical for cognitive control. Disruption in these processes may contribute to the mechanisms of the disease and explain cognitive deficits observed in psychosis and related disorders. We designed a neuroimaging study, using oddball task-based functional sequences (fMRI) and diffusion tensor imaging (DTI), comparing healthy controls (HC, n = 14, 7 females) and patients with stable psychosis (PSY, n = 20, 10 females).
View Article and Find Full Text PDFThis paper is based on a presentation made at the 9th London-Innsbruck Colloquium on Status Epilepticus and Acute Seizures in April 2024. Status Epilepticus (SE) is a neurological emergency involving prolonged seizures that disrupt brain function and may cause severe, long-term neurological damage. Developmental and Epileptic Encephalopathies (DEEs), a group of severe genetic disorders with early-onset epilepsy, often exhibit SE episodes that compound their inherent cognitive and developmental challenges.
View Article and Find Full Text PDFAn ARFID case report assessment with 18F-FDG PET/MRI and treatment with olanzapine, escitalopram and fluoxetine in adult.
Front Psychiatry
January 2025
Department of Neurology, the First Affiliated Hospital, Dalian Medical University, Dalian, China.
Background: Avoidant/restrictive food intake disorder (ARFID), a DSM-5-introduced eating disorder, is increasingly prevalent and challenging to treat, primarily affecting children and adolescents, with limited adult case reports. This rarity in adults leads to misdiagnosis or underdiagnosis, and treatment experiences are scarce.
Case Presentation: This report details an adult ARFID case, where the patient's fear of food intake followed gastric damage from corn ingestion, resulting in a restrictive diet of rice porridge due to gastric pain.
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