Data/hora: 15/06/2024 23:58:34

Provedor de dados: | 56
País: | Brazil
Título: | Gap effect and reaction time distribution: simple vs choice manual responses
Autores: | Machado-Pinheiro,W.; Gawryszewski,L.G.; Ribeiro-do-Valle,L.E.
Data: | 1998-10-01
Ano: | 1998
Palavras-chave: | Attention; Reaction time; Gap effect; Vision; Express responses.
Resumo: | It is well known that saccadic reaction times (SRT) are reduced when the target is preceded by the offset of the fixation point (FP) - the gap effect. Some authors have proposed that the FP offset also allows the saccadic system to generate a separate population of SRT, the express saccades. Nevertheless, there is no agreement as to whether the gap effect and express responses are also present for manual reaction times (MRT). We tested the gap effect and the MRT distribution in two different conditions, i.e., simple and choice MRT. In the choice MRT condition, subjects need to identify the side of the stimulus and to select the appropriate response, while in the simple MRT these stages are not necessary. We report that the gap effect was present in both conditions (22 ms for choice MRT condition; 15 ms for simple MRT condition), but, when analyzing the MRT distributions, we did not find any clear evidence for express manual responses. The main difference in MRT distribution between simple and choice conditions was a shift towards shorter values for simple MRT.
Tipo: | Info:eu-repo/semantics/other
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998001000012
Editor: | Associação Brasileira de Divulgação Científica
Relação: | 10.1590/S0100-879X1998001000012
Formato: | text/html
Fonte: | Brazilian Journal of Medical and Biological Research  v.31 n.10 1998
Fonte: | info:eu-repo/semantics/openAccess