Automatic activation of grip force magnitude during number magnitude processing

Alexej Michirev, Katharina Kühne, Oliver Lindemann, Martin H. Fischer, Markus Raab

Publication: Chapter in Book/Report/Conference proceedingConference contribution - Published abstract for conference with selection processResearchpeer-review


The aim of the study is to research how processing numbers correlates with force production. Participants tend to respond faster and softer to smaller numbers and also faster but harder to larger numbers. However, the research on these force-numerical associations is limited and might be confounded. Some included explicit task instructions on how to respond, thus activating explicit magnitude information, others did not control for spatial information. In the current study we controlled for explicit task instructions and spatial information with the objective to obtain a “purer” measurement of force-numerical associations. For this, we measured continuous grip force fluctuations during a magnitude comparison task. This rather novel method has the benefit that it does not require active responses and thus measures implicit grip force fluctuations during number processing. The results revealed that motor force was modulated by numerical magnitude. We found that smaller numbers induced less force than larger numbers. Our findings suggest that force-numerical associations can exist without spatial influences and are automatic.
Original languageEnglish
Title of host publicationAutomatic activation of grip force magnitude during number magnitude processing
Publication date2023
Publication statusPublished - 2023


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