نتایج جستجو برای: p300 potential
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P300 wave is an event related potential which has been frequently used in various psychiatric and neurological disorders for research and clinical purposes. It is supposed to give an insight about the in-depth neuroanatomical and neurobiological underpinnings of various brain structures in different disorders. Nowadays, it is being used often in different psychiatric disorders as a part of neur...
Two experiments are described in which the P300 component of the Event-Related Potential was recorded in a modification of the Roediger & McDermott (1995) paradigm. P300 amplitudes and topographies were evaluated in both true recognition of previously presented (Old) words and in false recognition of associatively related, never presented (Lure) words. In the first experiment, P300 topographies...
Auditory P300 event-related potentials were obtained at C3 and C4 recording sites from 20 patients with cerebral lesions that affected auditory areas of the brain. The patient group was matched for age and hearing sensitivity to a control group of 20 subjects. There were significant differences between the two groups for both latency and amplitude of the P300. Eight patients demonstrated an abs...
INTRODUCTION Faces are multi-dimensional stimuli conveying parallel information about identity and emotion. Although event-related potential (ERP) studies have disclosed a P300 component in oddball responses to both deviant identity and emotional target faces, it is hypothesized that partially different neural processes should subtend emotion vs. identity within the core network of face process...
P300 CLASSIFICATION USING DEEP BELIEF NETS Electroencephalogram (EEG) is measure of the electrical activity of the brain. One of the most important EEG paradigm that has been explored in BCI systems is the P300 signal. The P300 wave is an endogenous event-related-potential which can be captured during the process of decision making as a subject reacts to a stimulus. One way to detect the P300 s...
Objective To determine the prevalence of obstructive sleep apnea (OSA) in children with attention deficit/hyperactive disorder (ADHD) and compare amplitude and latency of the P300 potential among children with and without OSA. Method Sixty-one children with ADHD underwent oddball auditory attention tests for detection of P300 (ERPs) followed by an all-night polysomnography. The children were ...
OBJECTIVE To examine auditory cognitive evoked potentials (P300 potentials) and neuropsychological dysfunction in patients with Duchenne muscular dystrophy (DMD). METHOD P300 potentials and neuropsychological test results were obtained from 16 healthy control boys and 20 DMD patients. Full Intelligence Quotients (IQ) were estimated for patients and control group. Mean age was 9.5 years in the...
Currently, the event-related potential (ERP)-based spelling device, often referred to as P300-Speller, is the most commonly used brain-computer interface (BCI) for enhancing communication of patients with impaired speech or motor function. Among numerous improvements, a most central feature has received little attention, namely optimizing the stimulus used for eliciting ERPs. Therefore we compa...
McCarthy, Gregory, Marie Luby, John Gore, and Patricia and parietal cortex in the human brain during working memGoldman-Rakic. Infrequent events transiently activate human preory tasks. If P300 reflects processes related to working memfrontal and parietal cortex as measured by functional MRI. J. Neuory, then the transient events that elicit P300 should also rophysiol. 77: 1630–1634, 1997. P300 ...
In brain-computer interfaces (BCI), most of the approaches based on event-related potential (ERP) focus detection P300, aiming for single trial classification a speller task. While this is an important objective, existing P300 BCI still require several repetitions to achieve correct accuracy. Signal processing and machine learning advances in mostly revolve around part, leaving character out sc...
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