Evidence for the world as an external memory: A trade-off between internal and external visual memory storage.
Cost-efficiency
External memory
Eye movements
Trade-off
Visual working memory
Journal
Cortex; a journal devoted to the study of the nervous system and behavior
ISSN: 1973-8102
Titre abrégé: Cortex
Pays: Italy
ID NLM: 0100725
Informations de publication
Date de publication:
01 2020
01 2020
Historique:
received:
31
05
2018
revised:
09
11
2018
accepted:
11
12
2018
pubmed:
28
1
2019
medline:
22
6
2021
entrez:
28
1
2019
Statut:
ppublish
Résumé
We use visual working memory (VWM) to maintain the visual features of objects in our world. Although the capacity of VWM is limited, it is unlikely that this limit will pose a problem in daily life, as visual information can be supplemented with input from our external visual world by using eye movements. In the current study, we influenced the trade-off between eye movements and VWM utilization by introducing a cost to a saccade. Higher costs were created by adding a delay in stimulus availability to a copying task. We show that increased saccade cost results in less saccades towards the model and an increased dwell time on the model. These results suggest a shift from making eye movements towards taxing internal VWM. Our findings reveal that the trade-off between executing eye-movements and building an internal representation of our world is based on an adaptive mechanism, governed by cost-efficiency.
Identifiants
pubmed: 30685062
pii: S0010-9452(18)30445-3
doi: 10.1016/j.cortex.2018.12.017
pii:
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
108-114Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.