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Evoked Potentials, Visual (0)
Articles on Evoked Potentials, Visual
Genetic linkage analysis of a large family with photoparoxysmal response.
We report the results of a genetic linkage analysis of a large family with photoparoxysmal response, defined by the presence of a photoparoxysmal response (PPR) on EEG. The participants were genotyped using an 8 cM whole genome wide scan, and both parametric and non-parametric linkage analysis were...
Toward functioning and usable brain-computer interfaces (BCIs): a literature review.
The aim of this paper is to provide an exhaustive review of the literature about brain-computer interfaces (BCIs) that could be used with these paralysed patients. The electroencephalography (EEG) is the best candidate for the continuous use in the environment of patients' houses, due to its portabil...
The rapid extraction of gist-early neural correlates of high-level visual processing.
We obtained increased evoked gamma-band responses for coherent scenes compared with incoherent scenes beginning as early as 70 msec after stimulus onset within a distributed cortical network, including the right temporal, the right frontal, and the bilateral occipital cortex. This finding provides e...
Does coffee enriched with chlorogenic acids improve mood and cognition after acute administration in healthy elderly? A pilot study.
Our pilot results suggest that non-caffeine compounds in coffee such as the chlorogenic acids may be capable of exerting some acute behavioral effects, thus warranting further investigation....
Visual processing of contour patterns under conditions of inattentional blindness.
We hypothesize that the ERP difference at 220-260 msec reflects neural activity associated with automatic contour integration whereas the difference at 300-340 msec reflects visual awareness, both of which are dissociable from task-related postperceptual processing....
Parvalbumin-expressing interneurons linearly transform cortical responses to visual stimuli.
We establish a role of parvalbumin (PV)-expressing cells, a large class of inhibitory neurons that target the soma and perisomatic compartments of pyramidal cells, in controlling cortical responses. By bidirectionally manipulating PV cell activity in visual cortex we show that these neurons strongly...
Evidence for impaired neocortical synaptic plasticity in bipolar II disorder.
We examined VEP plasticity in healthy control subjects and patients with bipolar II disorder (BD-II). Forty healthy control subjects and 26 individuals with a DSM-IV diagnosis of BD-II matched for age and gender participated. The VEPs were evoked by checkerboard reversal stimulation...
Sustained gamma band synchronization in early visual areas reflects the level of selective attention.
Cortical gamma band synchronization is associated with attention. Accordingly, directing attention to certain visual stimuli modulates gamma band activity in visual cortical areas. However, gradual effects of attention and behavior on gamma band activity in early visual areas have no...
Myasthenia gravis-associated neuromyelitis optica-like disease: an immunological link between the central nervous system and muscle?
Although overt involvement of the central nervous system (CNS) in myasthenia gravis (MG) is considered rare, hyperreflexia is a common and yet unexplained finding. Aquaporin 4 (AQP4), the target autoantigen in neuromyelitis optica, is expressed both in the CNS and in the neuromuscula...
A distinct contribution of short-wavelength-sensitive cones to light-evoked activity in the mouse pretectal olivary nucleus.
We addressed this problem by recording electrophysiological responses in the mouse pretectal olivary nucleus (PON) (a target of ipRGCs and origin of the pupil light reflex) to a range of gradual and abrupt changes in light intensity. Dim stimuli drove minimal changes in PON activity, suggesting that...