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Fixation-related potentials during a virtual navigation task: The influence of image statistics on early cortical processing.
Atten Percept Psychophys
January 2025
U.S. DEVCOM Army Research Laboratory, Humans in Complex Systems, Aberdeen Proving Ground, MD, USA.
Historically, electrophysiological correlates of scene processing have been studied with experiments using static stimuli presented for discrete timescales where participants maintain a fixed eye position. Gaps remain in generalizing these findings to real-world conditions where eye movements are made to select new visual information and where the environment remains stable but changes with our position and orientation in space, driving dynamic visual stimulation. Co-recording of eye movements and electroencephalography (EEG) is an approach to leverage fixations as time-locking events in the EEG recording under free-viewing conditions to create fixation-related potentials (FRPs), providing a neural snapshot in which to study visual processing under naturalistic conditions.
View Article and Find Full Text PDFMethylmalonic acidaemia masquerading as a neurodegenerative disorder.
BMJ Case Rep
January 2025
Paediatrics, King George's Medical College, Lucknow, Uttar Pradesh, India.
We present the case of a toddler displaying neuroregression post-acute gastroenteritis, initially suggesting neurodegenerative disorders. Further investigations showed atypical results-neuroimaging was inconsistent with suspected disorders, while fundus evaluation, evoked potentials and nerve conduction velocity were normal. Specialised tests using gas chromatography mass spectrometry and tandem mass spectrometry identified methylmalonic acidaemia (MMA), implicating abnormal neurometabolism.
View Article and Find Full Text PDFVestibular function in children with neurodevelopmental disorders: A neglected sense?
Clin Neurophysiol
January 2025
Ghent University, Department of Rehabilitation Sciences, Corneel Heymanslaan 10 9000 Ghent, Belgium; Ghent University Hospital, Department of Otorhinolaryngology, Corneel Heymanslaan 10 9000 Ghent, Belgium.
Objective: The study aimed to explore the vestibular function in children with neurodevelopmental disorders (NDDs).
Methods: Twenty-eight participants with a NDD (6 girls, 22 boys; 6-13 years; 9;3 ± 2;4 years) were enrolled in this pilot study. Sixteen participants had a single NDD (Autism Spectrum Disorder: n = 7, Developmental Coordination Disorder: n = 3; Attention Deficit/Hyperactivity Disorder: n = 6), the remaining 12 had comorbid NDDs.
Visual Reliance in Severe Hearing Loss: Visual Evoked Potentials (VEPs) Study.
Audiol Res
January 2025
Neurology Department, Kafrelsheikh University Hospitals, Kafr Elsheikh 33516, Egypt.
Unlabelled: Peripheral hearing loss is associated with the cross-modal re-organization of the auditory cortex, which can occur in both pre- and post-lingual deaf cases.
Background/objectives: Whether to rely on the visual cues in cases with severe hearing loss with adequate amplification is a matter of debate. So, this study aims to study visual evoked potentials (VEPs) in children with severe or profound HL, whether fitted with HAs or CIs.
Arcuate fasciculus cortico-cortical evoked potentials and direct cortico-subcortical stimulation during awake craniotomy for debulking of left dominant temporal oligodendroglioma.
Neurosurg Focus Video
January 2025
Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Adelaide, South Australia; and.
Electrophysiological mapping and monitoring techniques permit the objective measurement of eloquent cortical regions and accompanying white matter tracts to reduce the incidence of iatrogenic injury in glioma surgery. Recently, there has been increased interest in mapping and monitoring of the human arcuate fasciculus via cortico-cortical evoked potentials (CCEPs) during awake and asleep craniotomy. The authors present the case of a 27-year-old female who underwent a hypnosis-assisted awake craniotomy with cortico-subcortical language mapping and arcuate fasciculus CCEPs.
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