Consulta: subjectFacets:"P300"
Registros recuperados: 4
Data/hora: 05/06/2024 10:38:20

Modulation of thyroid hormone receptor transactivation by the early region 1A (E1A)-like inhibitor of differentiation 1 (EID1)
Provedor de dados: 74
Autores: Vargas,Diana; Celis,Luis; Romero,Carolina; Lizcano,Fernando.
Transcriptional activation (TA) mediated by the effect of thyroid hormones on target genes requires co-activator proteins such as the early region 1A (E1A) associated 300 kDa binding protein (p300) and the cAMP response element binding protein (CREB) binding protein (CBP), known as the p300/CBP complex, which acetylate histones 3 and 4 to allow transcriptional machinery access to the target gene promoter. Little is known on the role of p300 in thyroid hormone receptor (TR) mediated TA but the E1A-like inhibitor of differentiation 1 (EID1), an inhibitor of p300 histone acetyltransferase (HAT), is a functional homolog of E1A and may inhibit myogenic differentiation factor D (MyoD) transcriptional activity and reduces muscle cell differentiation. We evaluated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Co-activator; EID1; P300; Thyroid receptors; Transcription.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000300003

Effect of Psychostimulants on Distinct Attentional Parameters in Attentional Deficit/Hyperactivity Disorder
Provedor de dados: 48
Autores: LÓPEZ,JAVIER; LÓPEZ,VLADIMIR; ROJAS,DANIEL; CARRASCO,XIMENA; ROTHHAMMER,PAULA; GARCÍA,RICARDO; ROTHHAMMER,FRANCISCO; ABOITIZ,FRANCISCO.
Although there is extensive literature about the effects of stimulants on sustained attention tasks in attentional deficit/hyperactivity disorder (ADHD), little is known about the effect of these drugs on other attentional tasks involving different neural systems. In this study we measured the effect of stimulants on ADHD children, both in the electroencephalographic (EEG) activity during sustained attentional tasks and in psychometric performance during selective attentional tasks. These tasks are known to rely on different cortical networks. Our results in children medicated with 10 mg of d-amphetamine administered 60 min before the study indicate (i) a significant increase in amplitude but not latency of the P300 component of the event-related potential...
Tipo: Journal article
Palavras-chave: Attentional deficit; EEG; Event-related potentials; Hyperactivity; Stroop; P300.
Ano: 2004
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000300010

Attentional bias modulation by reappraisal in patients with generalized anxiety disorder: an event-related potential study
Provedor de dados: 56
Autores: Han,H.Y.; Gan,T.; Li,P.; Li,Z.J.; Guo,M.; Yao,S.M.
Affective states influence subsequent attention allocation. We evaluated emotional negativity bias modulation by reappraisal in patients with generalized anxiety disorder (GAD) relative to normal controls. Event-related potential (ERP) recordings were obtained, and changes in P200 and P300 amplitudes in response to negative or neutral words were noted after decreasing negative emotion or establishing a neutral condition. We found that in GAD patients only, the mean P200 amplitude after negative word presentation was much higher than after the presentation of neutral words. In normal controls, after downregulation of negative emotion, the mean P300 amplitude in response to negative words was much lower than after neutral words, and this was significant in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reappraisal; Generalized anxiety disorder; Event-related potential; P200; P300.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000700576

Effects of caffeine on the electrophysiological, cognitive and motor responses of the central nervous system
Provedor de dados: 56
Autores: Deslandes,A.C.; Veiga,H.; Cagy,M.; Piedade,R.; Pompeu,F.; Ribeiro,P.
Caffeine is the most consumed psychoactive substance in the world. The effects of caffeine have been studied using cognitive and motor measures, quantitative electroencephalography (qEEG) and event-related potentials. However, these methods are not usually employed in combination, a fact that impairs the interpretation of the results. The objective of the present study was to analyze changes in electrophysiological, cognitive and motor variables with the ingestion of caffeine, and to relate central to peripheral responses. For this purpose we recorded event-related potentials and eyes-closed, resting EEG, applied the Stroop test, and measured reaction time. Fifteen volunteers took caffeine (400 mg) or placebo in a randomized, crossover, double-blind...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Quantitative electroencephalography; P300; Caffeine; Cognitive and motor measures; Psychostimulants.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000700011