Location-cued visual selection—Placeholder dots improve target identification
| Autor: | Hans-Christoph Nothdurft |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Adult
Male Computer science Speech recognition Fixation Ocular 050105 experimental psychology Young Adult 03 medical and health sciences 0302 clinical medicine Reaction Time Selection (linguistics) Humans Attention 0501 psychology and cognitive sciences Transient (computer programming) Sensory cue Aged Cued speech 05 social sciences Sensory Systems Ophthalmology Identification (information) Pattern Recognition Visual Female Cues Constant (mathematics) 030217 neurology & neurosurgery |
| Zdroj: | Journal of Vision. 19:16 |
| ISSN: | 1534-7362 |
| DOI: | 10.1167/19.13.16 |
| Popis: | Visual cues help to select a target and attract attention to it. In the present study, a 50-ms exogenous cue was presented to select one of 80 tilted lines, and attention effects at various delays were measured as the time observers needed to identify this target. Like in earlier detection studies, there was a transient cuing effect; targets presented soon after the cue (delays of 50-300 ms) were identified particularly fast. This benefit was followed by a continuous decay of performance toward longer delays (measured up to 5 s), at which the necessary presentation time to identify the target was strongly increased. The decay was substantially reduced when placeholder dots were shown during the delay, at subsequent line positions. The simple presentation of a structured background in the form of random dots did not have this effect. When the presentation times for constant performance were taken to compute the presumed strength of underlying neural responses, the effect of placeholders was seen as a nearly constant addition to the cued target signals, with an additional transient peak about 100 ms after cue (and placeholders) onset. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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