Compatibility between object size and response side in grasping: The left hand prefers smaller objects, the right hand prefers larger objects
- Published
- Accepted
- Subject Areas
- Neuroscience, Kinesiology, Psychiatry and Psychology
- Keywords
- ATOM, compatibility, SNARC, motor control, sensorimotor, grasping
- Copyright
- © 2018 Seegelke et al.
- Licence
- This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ Preprints) and either DOI or URL of the article must be cited.
- Cite this article
- 2018. Compatibility between object size and response side in grasping: The left hand prefers smaller objects, the right hand prefers larger objects. PeerJ Preprints 6:e27194v1 https://doi.org/10.7287/peerj.preprints.27194v1
Abstract
It has been proposed that the brain processes quantities such as space, size, number, and other magnitudes using a common neural metric, and that this common representation system reflects a direct link to motor control, because the integration of spatial, temporal, and other quantity-related information is fundamental for sensorimotor transformation processes. In the present study, we examined compatibility effects between physical stimulus size and spatial (response) location during a sensorimotor task. Participants reached and grasped for a small or large object with either their non-dominant left or their dominant right hand. Our results revealed that participants initiated left hand movements faster when grasping the small cube compared to the large cube, whereas they initiated right hand movements faster when grasping the large cube compared to the small cube. Moreover, the compatibility effect influenced the timing of grip aperture kinematics. These findings indicate that the interaction between object size and response hand affects the planning of grasping movements and supports the notion of a strong link between the cognitive representation of (object) size, spatial (response) parameters, and sensorimotor control.
Author Comment
This is a submission to PeerJ for review.
Supplemental Information
Descriptive statistics of movement parameters
Descriptive statistics of MT and several kinematic parameters (N = 24). The variables “lower” and “upper” refer to the respective bounds of the 95% credible interval.
JASP output table for the Bayesian Repeated Measures ANOVAs
[P(M) indicates prior model probabilities which are set to be equal across all models. P(M|data) indicates the updated probabilities after having observed the data. BFM indicates the degree to which the data have changed the prior model odds. BF10 indicates the Bayes factor grading the intensity of the evidence that the data provide for H1 versus H0. Error % indicates the size of the error in the integration routine relative to the Bayes factor, similar to a coefficient of variation. All models include subject.
