نتایج جستجو برای: مولفة p300

تعداد نتایج: 5990  

2013
Sulakshana P. Mukherjee Marcelo Behar Harry A. Birnbaum Alexander Hoffmann Peter E. Wright Gourisankar Ghosh

NF-κB plays a vital role in cellular immune and inflammatory response, survival, and proliferation by regulating the transcription of various genes involved in these processes. To activate transcription, RelA (a prominent NF-κB family member) interacts with transcriptional co-activators like CREB-binding protein (CBP) and its paralog p300 in addition to its cognate κB sites on the promoter/enha...

2014
Suna Sarikaya Tahir Kurtulus Yoldas Nese Gungor Yavasoglu

Evaluation of cognitive functions in Parkinson’s patients without dementia with auditory event related potential (P300) Objective: Idiopathic Parkinson’s disease is a clinical situation characterized by akinesia, rigidity, and tremor, and results from the degeneration of the dopaminergic nervous system. As the disease progresses over time, depression, cognitive dysfunction and alterations in co...

Journal: :Biological psychology 1978
R T Wilkinson D M Seales

The purpose of this study was to determine whether certain previously reported relationships between event-related potentials and measures of signal detection performance occur in vigilance as well as psychophysical settings. In the course of the study, evidence was found which challenges previously proposed psychological correlates of "P300". EEG was recorded while 15 subjects carried out a 40...

2010
E. DONCHIN M. KUBOVY M. KUTAS R. JOHNSON JR R. I. HERNING

Using a stepwise discriminant analysis, we demonstrate that the amplitude of P300 is a graded function of the complexity of information processing required of a S following a stimulus. This relationship between cognitive complexity and P300 is apparent only when the S is not pressed to generate fast and accurate discriminant responses to the stimuli. Under a reaction-time regime, a large P300 i...

2010
Chanan S. Syan Randy E.S. Harnarinesingh

The P300 component of Event Related Brain Potentials (ERP) is commonly used in Brain Computer Interfaces (BCI) to translate the intentions of an individual into commands for external devices. The P300 response, however, resides in a signal environment of high background noise. Consequently, the main problem in developing a P300-based BCI lies in identifying the P300 response in the presence of ...

Journal: :International journal of psychophysiology : official journal of the International Organization of Psychophysiology 2007
Edward M Bernat Jason R Hall Benjamin V Steffen Christopher J Patrick

Prior work has consistently revealed a relationship between antisocial behavior and reduced P300 amplitude. Fewer studies have directly evaluated behavioral indices of aggression and P300, and those that have generally do not account for potential mediating variables such as age, intelligence, and behavioral task performance. The current study assessed the relationship between the total number ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد 1389

فعالیت های شناختی بخشی از فعالیت های مغزی است که در طی کارهایی مانند تشخیص و شناسایی ورودی های حسی، تمرکز و ... بروز می کند. یکی از روش های پرکاربرد در مطالعات مربوط به این فعالیت ها، ثبت پیوسته پتانسیل های الکتریکی مغز (الکتروانسفالوگرافی eeg) است. پتانسیل های وابسته به رخداد (erp)، نوعی از سیگنال eeg است که درشرایط اعمال تحریک به شخص و یا وقوع یک رخداد ظهور می کند. در اکثر مطالعات p300 به عنو...

Journal: :Molecular bioSystems 2011
Mingquan Guo Zanxian Xia Hong Ma

An effective new platform for phosphosite mapping and subsequent functional screening was developed to analyze the targeted protein-protein interactions of p300 and CBP with β-catenin. Two novel functional phosphosites, Ser12 of p300 and Ser92 of CBP, were revealed to modulate p300/β-catenin and CBP/β-catenin interactions, respectively.

Journal: :Alcoholism, clinical and experimental research 2013
Natalie L Cuzen Colin Andrew Kevin G F Thomas Dan J Stein George Fein

BACKGROUND Event-related potential studies show reduced P300 amplitudes in alcohol use disorders (AUDs). Alcohol exposure, genetic vulnerability to alcoholism, and comorbid psychopathology may contribute to this reduction. Most previous research has studied treated adult AUD samples, which have more severe alcoholism, a greater family history of AUDs, and more comorbidity than untreated samples...

Journal: :Neurobiology of aging 1997
J M Ford W T Roth B G Isaacks J R Tinklenberg J Yesavage A Pfefferbaum

Automatic and effortful processes were investigated using event-related brain potentials (ERPs) recorded from moderately impaired subjects with probable Alzheimer's Disease (AD), normal elderly, and normal young controls. The effects of effortful attention on ERPs to loud noises and the effects of stimulus intrusiveness on effortfully elicited ERPs were studied. First, ERPs to task relevant and...

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