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12-01-2024 | Research

Towards formal models of inhibitory mechanisms involved in motor imagery: a commentary on Bach et al. (2022)

Auteurs: Ladislas Nalborczyk, Marieke Longcamp, Thibault Gajdos, Mathieu Servant, F.-Xavier Alario

Gepubliceerd in: Psychological Research | Uitgave 6/2024

Abstract

A vast body of research suggests that the primary motor cortex is involved in motor imagery. This raises the issue of inhibition: how is it possible for motor imagery not to lead to motor execution? Bach et al. (Psychol Res Psychol Forschung. 10.1007/s00426-022-01773-w, 2022, this issue) suggest that the motor execution threshold may be “upregulated” during motor imagery to prevent execution. Alternatively, it has been proposed that, in parallel to excitatory mechanisms, inhibitory mechanisms may be actively suppressing motor output during motor imagery. These theories are verbal in nature, with well-known limitations. Here, we describe a toy-model of the inhibitory mechanisms thought to be at play during motor imagery to start disentangling predictions from competing hypotheses.

vorige artikel Exorcizing the homunculus from ideomotor/simulation theory: a commentary on Bach et al. (2022), Frank et al. (2023), and Rieger et al. (2023)

volgende artikel The complex interplay between perception, cognition, and action: a commentary on Bach et al. 2022

Here “trial” refers to a prototypical trial in the action-mode switching paradigm (Rieger et al., 2017), where participants have to perform motor imagery and indicate the onset (reaction time) and duration (movement time) of motor imagery via a response button.

This argument holds for any activation function that increases until a certain point in time and then decreases, and therefore is not specific to the lognormal activation function.

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Titel: Towards formal models of inhibitory mechanisms involved in motor imagery: a commentary on Bach et al. (2022)
Auteurs: Ladislas Nalborczyk
Marieke Longcamp
Thibault Gajdos
Mathieu Servant
F.-Xavier Alario
Publicatiedatum: 12-01-2024
Uitgeverij: Springer Berlin Heidelberg
Gepubliceerd in: Psychological Research / Uitgave 6/2024
Print ISSN: 0340-0727
Elektronisch ISSN: 1430-2772
DOI: https://doi.org/10.1007/s00426-023-01915-8

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