ArticleFrontiers in psychology2020
The Role of Haptic Expectations in Reaching to Grasp: From Pantomime to Natural Grasps and Back Again.
Article in Frontiers in psychology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Obstacle avoidance of physical, stereoscopic, and pictorial objects.Virtual reality · 2025Article
- The "What" and "How" of Pantomime Actions.Vision (Basel, Switzerland) · 2024Review
- Movement kinematic and postural control differences when performing a visuomotor skill in real and virtual environments.Experimental brain research · 2023Article
- Familiar size affects perception differently in virtual reality and the real world.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2023Article
- Sustainable materials: a linking bridge between material perception, affordance, and aesthetics.Frontiers in psychology · 2023Review
- Action goals and the praxis network: an fMRI study.Brain structure & function · 2022Article
- Bimanual thumb-index finger indications of noncorresponding extents.Attention, perception & psychophysics · 2022Article
- Graspability Modulates the Stronger Neural Signature of Motor Preparation for Real Objects vs. Pictures.Journal of cognitive neuroscience · 2021Article
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4 authors.
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Abstract
When we reach to pick up an object, our actions are effortlessly informed by the object's spatial information, the position of our limbs, stored knowledge of the object's material properties, and what we want to do with the object. A substantial body of evidence suggests that grasps are under the control of "automatic, unconscious" sensorimotor modules housed in the "dorsal stream" of the posterior parietal cortex. Visual online feedback has a strong effect on the hand's in-flight grasp aperture. Previous work of ours exploited this effect to show that grasps are refractory to cued expectations for visual feedback. Nonetheless, when we reach out to pretend to grasp an object (pantomime grasp), our actions are performed with greater cognitive effort and they engage structures outside of the dorsal stream, including the ventral stream. Here we ask whether our previous finding would extend to cued expectations for haptic feedback. Our method involved a mirror apparatus that allowed participants to see a "virtual" target cylinder as a reflection in the mirror at the start of all trials. On "haptic feedback" trials, participants reached behind the mirror to grasp a size-matched cylinder, spatially coincident with the virtual one. On "no-haptic feedback" trials, participants reached behind the mirror and grasped into "thin air" because no cylinder was present. To manipulate haptic expectation, we organized the haptic conditions into blocked, alternating, and randomized schedules with and without verbal cues about the availability of haptic feedback. Replicating earlier work, we found the strongest haptic effects with the blocked schedules and the weakest effects in the randomized uncued schedule. Crucially, the haptic effects in the cued randomized schedule was intermediate. An analysis of the influence of the upcoming and immediately preceding haptic feedback condition in the cued and uncued random schedules showed that cuing the upcoming haptic condition shifted the haptic influence on grip aperture from the immediately preceding trial to the upcoming trial. These findings indicate that, unlike cues to the availability of visual feedback, participants take advantage of cues to the availability of haptic feedback, flexibly engaging pantomime, and natural modes of grasping to optimize the movement.
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