A5048444644- Sleep and Wakefulness Research
- EEG and Brain-Computer Interfaces
- Memory and Neural Mechanisms
- Sleep and related disorders
- Neural dynamics and brain function
- Circadian rhythm and melatonin
- Gender Politics and Representation
- Dementia and Cognitive Impairment Research
- Functional Brain Connectivity Studies
- Neuroscience and Neuropharmacology Research
- Social and Intergroup Psychology
- LGBTQ Health, Identity, and Policy
- Context-Aware Activity Recognition Systems
University of Ottawa
2022-2025
Royal Ottawa Mental Health Centre
2022-2025
Universidad Pablo de Olavide
2018-2021
Biomedical Research Networking Center on Neurodegenerative Diseases
2018
The hallmark eye movement (EM) bursts that occur during rapid (REM) sleep are markers of consolidation for procedural memory involving novel cognitive strategies and problem-solving skills. Examination the brain activity associated with EMs REM might elucidate processes involved in consolidation, may uncover functional significance themselves. Participants performed a REM-dependent, task (i.e. Tower Hanoi; ToH) before after intervals either overnight (n = 20) or daytime 8-hour wake period...
Spindles are often temporally coupled to slow waves (SW). These SW-spindle complexes have been implicated in memory consolidation that involves transfer of information from the hippocampus neocortex. However, spindles and SW, which characteristic NREM sleep, can occur as part this complex, or isolation. It is not clear whether dissociable parts brain recruited when SW vs. Here, we tested differences cerebral activation time-locked uncoupled spindles, using simultaneous EEG-fMRI. Consistent...
Abstract Sleep is thought to play a complementary role in human memory processing: sleep loss impairs the formation of new memories during following awake period and, conversely, normal promotes strengthening already encoded memories. However, whether can strengthen deteriorated caused by insufficient remains unknown. Here, we showed that restriction group participants reduction stability EEG activity patterns across multiple encoding same event awake, compared with got full night’s sleep....
Abstract Sleep spindles (SP) are one of the few known electrophysiological neuronal biomarkers interindividual differences in cognitive abilities and aptitudes. Recent simultaneous electroencephalography with functional magnetic resonance imaging (EEG-fMRI) studies suggest that magnitude activation brain regions recruited during spontaneous spindle events is specifically related to Reasoning abilities. However, it not if relationship differs between uncoupled spindles, slow waves (SW),...
We examined how aging affects the role of sleep in consolidation newly learned cognitive strategies. Forty healthy young adults (20-35 years) and 30 older (60-85 were included. Participants trained on Tower Hanoi (ToH) task, then, half each age group assigned to either 90-minute nap condition, or stayed awake, before retesting. The temporal co-occurrence between slow waves (SW) spindles (SP) during non-rapid eye movement was as a function relation memory problem-solving skills. found that...
Sleep is essential for the optimal consolidation of newly acquired memories. This study examines neurophysiological processes underlying memory during sleep, via reactivation. Here, we investigated impact slow wave - spindle (SW-SP) coupling on regionally-task-specific brain reactivations following motor sequence learning. Utilizing simultaneous EEG-fMRI our findings revealed that reactivation occured time-locked to coupled SW-SP complexes, and specifically in areas critical Notably, these...
There is evidence suggesting that online consolidation during retrieval-mediated learning interacts with offline subsequent sleep to transform memory. Here we investigate whether this interaction persists when follows post-training and the direction of conditioned by quality encoding resulting from manipulation amount on previous night. The was determined computing degree similarity between EEG-activity patterns across restudy face pairs in two groups young participants, one who slept last 4...
El trato hacia los homosexuales siempre ha despertado mucha controversia, especialmente ahora que aumentado el interes por este fenomeno debido a dejado de ser un tema tabu, al menos en la cultura occidental. Multiples factores socioculturales han influido cambio vision, como uso internet medio libre expresion o cambios las condiciones socio politicas del pais (Ahmad, 2010). Estos afectan tanto jovenes adultos quienes se estan adaptando esta vision sexualidad. objetivo investigacion es...