Visual attention modulates signal detectability.
J Exp Psychol Hum Percept Perform
; 16(4): 802-11, 1990 Nov.
Article
em En
| MEDLINE
| ID: mdl-2148593
ABSTRACT
The mechanism by which visual-spatial attention affects the detection of faint signals has been the subject of considerable debate. It is well known that spatial cuing speeds signal detection. This may imply that attentional cuing modulates the processing of sensory information during detection or, alternatively, that cuing acts to create decision bias favoring input at the cued location. These possibilities were evaluated in 3 spatial cuing experiments. Peripheral cues were used in Experiment 1 and central cues were used in Experiments 2 and 3. Cuing similarly enhanced measured sensitivity, P(A) and d', for simple luminance detection in all 3 experiments. Under some conditions it also induced shifts in decision criteria (beta). These findings indicate that visual-spatial attention facilitates the processing of sensory input during detection either by increasing sensory gain for inputs at cued locations or by prioritizing the processing of cued inputs.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Orientação
/
Atenção
/
Percepção Visual
/
Aprendizagem por Discriminação
Tipo de estudo:
Prognostic_studies
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
J Exp Psychol Hum Percept Perform
Ano de publicação:
1990
Tipo de documento:
Article