Search results for " brain"
showing 10 items of 985 documents
Transcranial Magnetic Stimulation Trains at 1 Hz Frequency of the Right Posterior Parietal Cortex Facilitate Recognition Memory
2021
Neuroimaging, neuropsychological, and brain stimulation studies have led to contrasting findings regarding the potential roles of the lateral parietal lobe in episodic memory. Studies using brain stimulation methods reported in the literature do not offer unequivocal findings on the interactions with stimulation location (left vs. right hemisphere) or timing of the stimulation (encoding vs. retrieval). To address these issues, active and sham 1 Hz repetitive transcranial magnetic stimulation (rTMS) trains of 600 stimuli were applied over the right or left posterior parietal cortex (PPC) before the encoding or before the retrieval phase of a recognition memory task of unknown faces in a grou…
Water Dynamics in Biological Systems investigated using Neutron Scattering Techniques
Living systems can not survive in absence of the water environments which play a fundamental role in living functions. Thus in the scienti?c community many studies were and are addressed to characterize water and its dynamics properties in biological systems. However, a clear description of water in such systems has been not reached yet. In fact, the investigations performed with di?erent techniques - those based on Nuclear Magnetic Resonance or those based on Neutron Scattering - look at di?erent di?usive motions and interactions water-biomolecules, leading controversial results and hence generating many debates between scientists. In this thesis we support the idea that two water populati…
Termodinamica e Funzioni Mentali Complesse
2010
Lesiones de hemisferio derecho. Materiales y análisis pragmático (Volumen VII del corpus PerLA).
2011
El corpus PerLA (“Percepción, Afasia y Lenguaje”), surge en el área de Lingüística General de la Universitat de València como respuesta a la necesidad de integrar el estudio de las patologías lingüísticas en las tendencias actuales de la pragmática y la lingüística de corpus. En esta ocasión se presentan seis transcripciones en las que participa un hablante con lesión cerebral de hemisferio derecho, una situación que ha sido poco investigada desde planteamientos lingüístico-logopédicos, y para la que la bibliografía suele proponer síntomas de escaso alcance verbal, como la disprosodia o la agnosia visual. No obstante, el análisis detenido de los datos ecológicos permite comprobar la alterac…
Multiple ring-enhancing brain lesions in a ghanaian patient: a case report
2012
Datortomogrāfijas protokola pielietošana smadzeņu nāves apstiprināšanai
2020
Bakalaura darba tēma ir “Datortomogrāfijas protokola pielietošana smadzeņu nāves apstiprināšanā”. Attīstoties intensīvās terapijas un transplantoloģijas nozarēm, smadzeņu nāves diagnostikā nepieciešams papildus veikt izmeklējumus, kas nodrošina ātru un efektīvu rezultātu, veicot apstiprinājumu smadzeņu nāves diagnozei. Datortomogrāfijas angiogrāfija ir viens no tiem. Bakalaura darba izvirzītā hipotēze ir: datortomogrāfijas protokols smadzeņu nāves apstiprināšanai katrā slimnīcā ir atšķirīgs. Darba mērķis ir noskaidrot datortomogrāfijas protokola pielietošanu smadzeņu nāves apstiprināšanai 3 Latvijas slimnīcās. Pētniecības uzdevumi ir apkopot un analizēt literatūru par galvas smadzeņu anatom…
Measuring the Task Induced Oscillatory Brain Activity Using Tensor Decomposition
2019
The characterization of dynamic electrophysiological brain activity, which form and dissolve in order to support ongoing cognitive function, is one of the most important goals in neuroscience. Here, we introduce a method with tensor decomposition for measuring the task-induced oscillations in the human brain using electroencephalography (EEG). The time frequency representation of source-reconstructed singletrail EEG data constructed a third-order tensor with three factors of time ∗ trails, frequency and source points. We then used a non-negative Canonical Polyadic decomposition (NCPD) to identify the temporal, spectral and spatial changes in electrophysiological brain activity. We validate …
Onset of Insulin Resistance in Hippocampal Synapses After Traumatic Brain Injury: Relevance to Alzheimer’s disease and Therapeutic Implications
An Atypical Case of Taravana Syndrome in a Breath-Hold Underwater Fishing Champion: A Case Report
2013
Dysbaric accidents are usually referred to compressed air-supplied diving. Nonetheless, some cases of decompression illness are known to have occurred among breath-hold (BH) divers also, and they are reported in the medical literature. A male BH diver (57 years old), underwater fishing champion, presented neurological disorders as dizziness, sensory numbness, blurred vision, and left frontoparietal pain after many dives to a 30–35 meters sea water depth with short surface intervals. Symptoms spontaneously regressed and the patient came back home. The following morning, pain and neurological impairment occurred again and the diver went by himself to the hospital where he had a generalized to…
Deriving electrophysiological brain network connectivity via tensor component analysis during freely listening to music
2020
Recent studies show that the dynamics of electrophysiological functional connectivity is attracting more and more interest since it is considered as a better representation of functional brain networks than static network analysis. It is believed that the dynamic electrophysiological brain networks with specific frequency modes, transiently form and dissolve to support ongoing cognitive function during continuous task performance. Here, we propose a novel method based on tensor component analysis (TCA), to characterize the spatial, temporal, and spectral signatures of dynamic electrophysiological brain networks in electroencephalography (EEG) data recorded during free music-listening. A thr…