Stimulus predictability moderates the withdrawal strategy in response to repetitive noxious stimulation in humans

Author:

Jure Fabricio A.1ORCID,Arguissain Federico G.12ORCID,Biurrun Manresa José A.23,Graven-Nielsen Thomas2,Andersen Ole Kæseler12

Affiliation:

1. Integrative Neuroscience, SMI®, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark

2. Center for Neuroplasticity and Pain (CNAP), SMI®, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark

3. Centro de Investigaciones y Transferencia de Entre Ríos (CITER) CONICET-UNER, Entre Ríos, Argentina

Abstract

Innate defensive behaviors such as reflexes are found across all species, constituting preprogrammed responses to external threats that are not anticipated. Previous studies indicated that the excitability of the reflex arcs like spinal nociceptive withdrawal reflex (NWR) pathways in humans are modulated by several cognitive factors. This study assesses how the predictability of a threat affects the biomechanical pattern of the withdrawal response, showing that distal and proximal muscles are differentially modulated by descending control.

Funder

Danish National Research Foundation

Publisher

American Physiological Society

Subject

Physiology,General Neuroscience

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