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Sleep magnetoencephalography enhances detection and source imaging of seizures and fast oscillations in focal cortical dysplasia

Author(s): Heers M; Afnan J; Braun C; Grova C; Altenmüller DM; Steinhoff BJ; Dümpelmann M; Demerath T; Urbach H; Ethofer S; Siegel M; Schulze-Bonhage A; Lerche H; Li Hegner Y;

Objective: Focal cortical dysplasia (FCD) causes drug-resistant epilepsy requiring presurgical evaluation. Invasive electroencephalographic (EEG) studies demonstrate that sleep modulates epileptic activity, including interictal epileptiform discharges (IEDs), fast oscillations (FOs) in the beta ( ...

Article GUID: 41804684


Habitual napping in older adults is accompanied by altered heat-loss rhythms across the circadian cycle and reduced coupling between pre-sleep thermoregulatory dynamics and sleep initiation

Author(s): Dourte M; Hammad G; de Haan S; Deantoni M; Reyt M; Baillet M; Lesoinne A; Muto V; Collette F; Vandewalle G; Peigneux P; Cajochen C; Schmidt C;

Thermoregulatory processes are closely linked to sleep initiation and maintenance throughout the circadian cycle, and may contribute to the increased tendency to nap in older adults. This cross-sectional study examined whether habitual napping in healthy older individuals is associated with alter ...

Article GUID: 41797810


Blending Poly(dimethylsiloxane) with Poly(lactic acid) Using Polyhydroxyurethane Additives

Author(s): Younes GR; Heli B; Ajji A;

This work blends polydimethylsiloxane (PDMS) with poly-(lactic acid) (PLA) using polyhydroxyurethane (PHU) structures. The PHU is synthesized from mannitol biscarbonate and a short-chain PDMS-based diamine. The main objectives are, first, to explore the application of the PDMS-based PHU as an additive for PLA and, second, to enhance the flexibility and hy ...

Article GUID: 41783236


How vigilance states influence source imaging of physiological brain oscillations: evidence from intracranial EEG

Author(s): Wei X; Afnan J; Avigdor T; von Ellenrieder N; Delaire É; Royer J; Ho A; Minato E; Schiller K; Jaber K; Wang YL; Moye M; Bernhardt BC; Lina JM; Grova C; Frauscher B;

Cortical oscillations across sleep-wake cycles are essential for coordinating functional brain dynamics. High-density electroencephalography (HDEEG) combined with electrical source imaging (ESI) provides a noninvasive approach to map cortical dynamics; however, its ability to capture spatial ongo ...

Article GUID: 41687693


A pilot randomized controlled trial comparing the feasibility and preliminary effects of different forms of exercise-related social support for older adult survivors of cancer

Author(s): Smith-Turchyn J; Sinclair S; O' Loughlin E; Innes A; Richardson J; Pillips S; Beauchamp M; Thabane L; Wrosch C; Sabiston CM;

Purpose: To determine the feasibility and effectiveness of two forms of social support (peer and peer plus virtual professional support) on quality of life, feelings of support, and exercise levels in older adult survivors of cancer. Methods: We conducted a pilot randomized controlled trial. Par ...

Article GUID: 41673350


Tuned to walk: cue type, beat perception, and gait dynamics during rhythmic stimulation in aging

Author(s): Parker A; Dalla Bella S; Penhune VB; Young L; Grenet D; Li KZH;

Rhythmic auditory cueing (RAC) improves spatiotemporal gait parameters in older adults, often using isochronous rhythmic cues (i.e., with constant inter-beat-intervals). However, healthy gait contains fractal-like variability, (i.e., with persistent long-range correlations; LRC) which is disturbed when walking to isochronous cues. Embedding auditory cues ...

Article GUID: 41661338


Hierarchical Storage Management in User Space for Neuroimaging Applications

Author(s): Hayot-Sasson V; Glatard T;

Neuroimaging open-data initiatives have led to increased availability of large scientific datasets. While these datasets are shifting the processing bottleneck from compute-intensive to data-intensive, current standardized analysis tools have yet to adopt strategies that mitigate the costs associated with large data transfers. A major challenge in adaptin ...

Article GUID: 41432812


Patterns of Structural Disconnection Driving Proprioceptive Deficits in Chronic Stroke

Author(s): Kaeja M; Gajiyeva L; Iturria-Medina Y; Villringer A; Sehm B; Steele C;

Background: Stroke is a leading cause of death and disability, with proprioceptive impairments affecting up to 64% of survivors. These impairments hinder sensorimotor recovery, significantly impacting poststroke quality of life. Proprioception depends on an integrated brain network but remains underexplored due to limitations in clinical assessments, hind ...

Article GUID: 41392885


Peripheral inflammation in a Canadian cohort of neurodegenerative conditions: Occurrence, determinants, and impact

Author(s): Seixas-Lima B; Rosa-Neto P; Phillips NA; Borrie M; Roncero CT; Lahiri D; Dori D; Eintracht S; Chertkow H;

Background"Inflammaging" describes chronic low-grade inflammation observed in aging individuals. It may play a major role in neurodegeneration.ObjectiveTo assess blood inflammatory markers in older adults. We hypothesized that elevated inflammation would be found in some cognitively nor ...

Article GUID: 41358624


Cerebral small vessel disease lesion segmentation methods: A systematic review

Author(s): Phelps J; Singh M; McCreary CR; Dallaire-Théroux C; Stein RG; Potvin-Jutras Z; Guan DX; Wu JD; Metz A; Smith EE;

Cerebral small vessel disease (CSVD) can manifest as brain lesions visible on magnetic resonance imaging, including white matter hyperintensities (WMH), cerebral microbleeds (CMB), perivascular spaces (PVS), lacunes, and recent small subcortical infarcts (RSSI). Detection and segmentation of thes ...

Article GUID: 41080650


The PREVENT-AD cohort: Accelerating Alzheimer s disease research and treatment in Canada and beyond

Author(s): Villeneuve S; Poirier J; Breitner JCS; Tremblay-Mercier J; Remz J; Raoult JM; Yakoub Y; Gallego-Rudolf J; Qiu T; Fajardo Valdez A; Mohammediyan B; Javanray M; Metz A; Sanami S; Ourry V; Wearn A; Pastor-Bernier A; Edde M; Gonneaud J; Stri ...

The PResymptomatic EValuation of Experimental or Novel Treatments for Alzheimer's Disease (PREVENT-AD) is an investigator-driven study that was created in 2011 and enrolled cognitively normal older adults with a family history of sporadic AD. Participants are deeply phenotyped and have now be ...

Article GUID: 41020412


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