1
|
Two types of memory-based (pantomime) reaches distinguished by gaze anchoring in reach-to-grasp tasks. Behav Brain Res 2020; 381:112438. [PMID: 31857149 DOI: 10.1016/j.bbr.2019.112438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 12/13/2019] [Accepted: 12/14/2019] [Indexed: 11/24/2022]
Abstract
Comparisons of target-based reaching vs memory-based (pantomime) reaching have been used to obtain insight into the visuomotor control of reaching. The present study examined the contribution of gaze anchoring, reaching to a target that is under continuous gaze, to both target-based and memory-based reaching. Participants made target-based reaches for discs located on a table or food items located on a pedestal or they replaced the objects. They then made memory-based reaches in which they pantomimed their target-based reaches. Participants were fitted with hand sensors for kinematic tracking and an eye tracker to monitor gaze. When making target-based reaches, participants directed gaze to the target location from reach onset to offset without interrupting saccades. Similar gaze anchoring was present for memory-based reaches when the surface upon which the target had been placed remained. When the target and its surface were both removed there was no systematic relationship between gaze and the reach. Gaze anchoring was also present when participants replaced a target on a surface, a movement featuring a reach but little grasp. That memory-based reaches can be either gaze anchor-associated or gaze anchor-independent is discussed in relation to contemporary views of the neural control of reaching.
Collapse
|
2
|
Singh S, Mandziak A, Barr K, Blackwell AA, Mohajerani MH, Wallace DG, Whishaw IQ. Human string-pulling with and without a string: movement, sensory control, and memory. Exp Brain Res 2019; 237:3431-3447. [DOI: 10.1007/s00221-019-05684-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Accepted: 11/07/2019] [Indexed: 01/04/2023]
|
3
|
Pouw W, Wassenburg SI, Hostetter AB, de Koning BB, Paas F. Does gesture strengthen sensorimotor knowledge of objects? The case of the size-weight illusion. PSYCHOLOGICAL RESEARCH 2018; 84:966-980. [PMID: 30552506 PMCID: PMC7239830 DOI: 10.1007/s00426-018-1128-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 12/05/2018] [Indexed: 11/30/2022]
Abstract
Co-speech gestures have been proposed to strengthen sensorimotor knowledge related to objects’ weight and manipulability. This pre-registered study (https://www.osf.io/9uh6q/) was designed to explore how gestures affect memory for sensorimotor information through the application of the visual-haptic size-weight illusion (i.e., objects weigh the same, but are experienced as different in weight). With this paradigm, a discrepancy can be induced between participants’ conscious illusory perception of objects’ weight and their implicit sensorimotor knowledge (i.e., veridical motor coordination). Depending on whether gestures reflect and strengthen either of these types of knowledge, gestures may respectively decrease or increase the magnitude of the size-weight illusion. Participants (N = 159) practiced a problem-solving task with small and large objects that were designed to induce a size-weight illusion, and then explained the task with or without co-speech gesture or completed a control task. Afterwards, participants judged the heaviness of objects from memory and then while holding them. Confirmatory analyses revealed an inverted size-weight illusion based on heaviness judgments from memory and we found gesturing did not affect judgments. However, exploratory analyses showed reliable correlations between participants’ heaviness judgments from memory and (a) the number of gestures produced that simulated actions, and (b) the kinematics of the lifting phases of those gestures. These findings suggest that gestures emerge as sensorimotor imaginings that are governed by the agent’s conscious renderings about the actions they describe, rather than implicit motor routines.
Collapse
Affiliation(s)
- Wim Pouw
- Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, 3000 DR, Rotterdam, The Netherlands.,Department of Psychological Sciences, University of Connecticut, Storrs, USA
| | - Stephanie I Wassenburg
- Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, 3000 DR, Rotterdam, The Netherlands. .,Human-Computer Interaction Institute, Carnegie Mellon University, Pittsburgh, USA.
| | | | - Bjorn B de Koning
- Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, 3000 DR, Rotterdam, The Netherlands
| | - Fred Paas
- Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, 3000 DR, Rotterdam, The Netherlands.,School of Education/Early Start, University of Wollongong, Wollongong, Australia
| |
Collapse
|