Reaching beyond spatial perception: Effects of intended future actions on visually guided prehension

Johnson-Frey, Scott H.; McCarty, Michael E.; Keen, Rachel

doi:10.1080/13506280344000329

Cited by 92 publications

(79 citation statements)

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“…Further evidence for impaired action chaining in autism comes from a study by who used a similar methodology to that of Johnson-Frey,McCarty, & Keen,(2004). In this study, children with and without autism were asked to pick up a block and move it to either a small or large container whilst their movement time was measured.…”

Section: Implicit Measures Of Action Understanding In Autismmentioning

confidence: 99%

Two systems for action comprehension in autism

Hamilton

Marsh

2013

Understanding Other Minds

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Section: Implicit Measures Of Action Understanding In Autismmentioning

confidence: 99%

Two systems for action comprehension in autism

Hamilton

Marsh

2013

Understanding Other Minds

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“…Analogous effects of task context have been reported in a wide variety of manual behaviours including: typing, handwriting, manual aiming and prehension (see review in Johnson-Frey et al [31]). Action-selection tasks have proven to be especially valuable in studying context effects [32], and have shed light on the properties of underlying movement representations [33].…”

Section: Introductionmentioning

confidence: 99%

Comparative investigations of manual action representations: evidence that chimpanzees represent the costs of potential future actions involving tools

Frey

Povinelli

2012

Phil. Trans. R. Soc. B

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The ability to adjust one's ongoing actions in the anticipation of forthcoming task demands is considered as strong evidence for the existence of internal action representations. Studies of action selection in tool use reveal that the behaviours that we choose in the present moment differ depending on what we intend to do next. Further, they point to a specialized role for mechanisms within the human cerebellum and dominant left cerebral hemisphere in representing the likely sensory costs of intended future actions. Recently, the question of whether similar mechanisms exist in other primates has received growing, but still limited, attention. Here, we present data that bear on this issue from a species that is a natural user of tools, our nearest living relative, the chimpanzee. In experiment 1, a subset of chimpanzees showed a non-significant tendency for their grip preferences to be affected by anticipation of the demands associated with bringing a tool's baited end to their mouths. In experiment 2, chimpanzees' initial grip preferences were consistently affected by anticipation of the forthcoming movements in a task that involves using a tool to extract a food reward. The partial discrepancy between the results of these two studies is attributed to the ability to accurately represent differences between the motor costs associated with executing the two response alternatives available within each task. These findings suggest that chimpanzees are capable of accurately representing the costs of intended future actions, and using those predictions to select movements in the present even in the context of externally directed tool use.

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“…the orientation of the hand that is used when picking up the cutlery. Anticipation of a forthcoming action is demonstrated to have eVects on reaching kinematics (Marteniuk et al 1987;Johnson-Frey et al 2004) and joint couplings during reaching (Steenbergen et al 1995). In the example of eating with knife and fork, anticipatory planning is evidenced by the macroscopic variable grip type.…”

Section: Introductionmentioning

confidence: 99%

Combined effects of planning and execution constraints on bimanual task performance

et al. 2008

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In this study we investigated the relative impact of planning and execution constraints on discrete bimanual task performance. In particular, in a bimanual CD-placement task, we compared people's preference to end movements comfortably with their preference to move symmetrically. In "Experiment 1" we examined the degree of interlimb coupling as participants repositioned two CDs in a CD rack by simultaneously moving their arms mirrorsymmetrically or asymmetrically into comfortable or uncomfortable end postures. Interlimb coupling was stronger when the arms moved symmetrically towards uncomfortable end postures. In "Experiment 2" participants were asked to realize speciWc end orientations of the CDs but they were free to choose an initial grip type and subsequent direction of forearm rotation. Surprisingly, the participants did not move their arms symmetrically but preferred to end in a comfortable posture with their right hand but not with their left hand. We conclude that in discrete bimanual task performance the tendency to end movements in a comfortable posture dominates over the tendency to synchronously activate homologous muscle pairs. The lateralized end-state comfort eVect suggests a hemispheric specialization for motor planning.

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Reaching beyond spatial perception: Effects of intended future actions on visually guided prehension

Cited by 92 publications

References 0 publications

Two systems for action comprehension in autism

Two systems for action comprehension in autism

Comparative investigations of manual action representations: evidence that chimpanzees represent the costs of potential future actions involving tools

Combined effects of planning and execution constraints on bimanual task performance

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