Computational mechanisms underlying the dynamics of physical and cognitive fatigue.
Cognition
; 240: 105603, 2023 11.
Article
en En
| MEDLINE
| ID: mdl-37647742
ABSTRACT
The willingness to exert effort for reward is essential but comes at the cost of fatigue. Theories suggest fatigue increases after both physical and cognitive exertion, subsequently reducing the motivation to exert effort. Yet a mechanistic understanding of how this happens on a moment-to-moment basis, and whether mechanisms are common to both mental and physical effort, is lacking. In two studies, participants reported momentary (trial-by-trial) ratings of fatigue during an effort-based decision-making task requiring either physical (grip-force) or cognitive (mental arithmetic) effort. Using a novel computational model, we show that fatigue fluctuates from trial-to-trial as a function of exerted effort and predicts subsequent choices. This mechanism was shared across the domains. Selective to the cognitive domain, committing errors also induced momentary increases in feelings of fatigue. These findings provide insight into the computations underlying the influence of effortful exertion on fatigue and motivation, in both physical and cognitive domains.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Emociones
/
Motivación
Tipo de estudio:
Prognostic_studies
Límite:
Humans
Idioma:
En
Revista:
Cognition
Año:
2023
Tipo del documento:
Article
País de afiliación:
Australia