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	Provedor de dados BJMBR (2) Autor Ribeiro-do-Valle,L.E. (2) Squella,S.A.F. (2) Azevedo,E.L. (1) Palavra-chave Attention (2) Priming (2) Forward masking (1) Go/no-go task (1) Masking (1) Reaction time (1) Simple task (1) Vision (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2003 (1) 2001 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Priming effects of a peripheral visual stimulus in simple and go/no-go tasks BJMBR Squella,S.A.F.; Ribeiro-do-Valle,L.E.. The early facilitatory effect of a peripheral spatially visual prime stimulus described in the literature for simple reaction time tasks has been usually smaller than that described for complex (go/no-go, choice) reaction time tasks. In the present study we investigated the reason for this difference. In a first and a second experiment we tested the participants in both a simple task and a go/no-go task, half of them beginning with one of these tasks and half with the other one. We observed that the prime stimulus had an early effect, inhibitory for the simple task and facilitatory for the go/no-go task, when the task was performed first. No early effect appeared when the task was performed second. In a third and a fourth experiment the participants were,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Priming; Attention; Masking; Simple task; Go/no-go task. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000200013 The early facilitatory effect of a peripheral spatially noninformative prime stimulus depends on target stimulus features BJMBR Azevedo,E.L.; Squella,S.A.F.; Ribeiro-do-Valle,L.E.. We investigated the dependency of the early facilitatory effect of a prime stimulus (S1) on the physical characteristics of the target stimulus (S2). A go-no go reaction time paradigm was used. The S1 was a gray ring and the S2s were a white vertical line, a white horizontal line, a white cross and a white small ring, all inside a white ring with the same dimensions as the S1. S1 onset-S2 onset asynchrony was 100 ms. The stimuli appeared randomly in any one of the quadrants of a monitor screen. The S2 could occur at the same position as the S1 or at a different one. We observed a strong facilitatory effect when the vertical line or the horizontal line was the go stimulus and no effect when the cross was the go stimulus. These results show that the features... Tipo: Info:eu-repo/semantics/article Palavras-chave: Priming; Attention; Forward masking; Vision; Reaction time. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000600017 Registros recuperados: 2 Primeira ... 1 ... Última

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