Concurrent visual working memory bias in sequential integration of approximate number.
Sci Rep
; 11(1): 5348, 2021 03 05.
Article
in En
| MEDLINE
| ID: mdl-33674642
Previous work has shown bidirectional crosstalk between Working Memory (WM) and perception such that the contents of WM can alter concurrent percepts and vice versa. Here, we examine WM-perception interactions in a new task setting. Participants judged the proportion of colored dots in a stream of visual displays while concurrently holding location- and color information in memory. Spatiotemporally resolved psychometrics disclosed a modulation of perceptual sensitivity consistent with a bias of visual spatial attention towards the memorized location. However, this effect was short-lived, suggesting that the visuospatial WM information was rapidly deprioritized during processing of new perceptual information. Independently, we observed robust bidirectional biases of categorical color judgments, in that perceptual decisions and mnemonic reports were attracted to each other. These biases occurred without reductions in overall perceptual sensitivity compared to control conditions without a concurrent WM load. The results conceptually replicate and extend previous findings in visual search and suggest that crosstalk between WM and perception can arise at multiple levels, from sensory-perceptual to decisional processing.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Attention
/
Visual Perception
/
Decision Making
/
Memory, Short-Term
Type of study:
Prognostic_studies
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
En
Journal:
Sci Rep
Year:
2021
Document type:
Article
Affiliation country:
Germany
Country of publication:
United kingdom