Dissociable Codes in Motor Working Memory.
Psychol Sci
; 35(2): 150-161, 2024 Feb.
Article
em En
| MEDLINE
| ID: mdl-38236687
ABSTRACT
Working memory has been comprehensively studied in sensory domains, like vision, but little attention has been paid to how motor information (e.g., kinematics of recent movements) is maintained and manipulated in working memory. "Motor working memory" (MWM) is important for short-term behavioral control and skill learning. Here, we employed tasks that required participants to encode and recall reaching movements over short timescales. We conducted three experiments (N = 65 undergraduates) to examine MWM under varying cognitive loads, delays, and degrees of interference. The results support a model of MWM that includes an abstract code that flexibly transfers across effectors, and an effector-specific code vulnerable to interfering movements, even when interfering movements are irrelevant to the task. Neither code was disrupted by increasing visuospatial working memory load. These results echo distinctions between representational formats in other domains, suggesting that MWM shares a basic computational structure with other working memory subsystems.
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Base de dados:
MEDLINE
Assunto principal:
Atenção
/
Memória de Curto Prazo
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article