Using Vision and Dynamic Touch to Perceive the Affordances of Tools

The information that people use to perceive whether a tool is suitable for a certain task depends on what is available at a given time. Visually scanning a tool and wielding it each provide information about the functional attributes of the tool. In experiment 1, we investigated the relative contributions of vision and dynamic touch to perceiving the suitability of various tools for various tasks. The results show that, when both vision and dynamic touch are available, the visual information dominates. When limited to dynamic touch, ratings of suitability are constrained by the inertial properties of the tool, and the inertial properties that are exploited depend on the task. In experiment 2, we asked whether the manner in which a tool is manipulated in exploration depends on the task for which it is being evaluated. The results suggest that tools are manipulated in ways that reflect intentions to perceive particular affordances. Exploratory movements sometimes mimic performatory movements.

[1]  Rob Withagen,et al.  The role of feedback information for calibration and attunement in perceiving length by dynamic touch. , 2005, Journal of experimental psychology. Human perception and performance.

[2]  T. Stoffregen,et al.  On specification and the senses , 2001, Behavioral and Brain Sciences.

[3]  M T Turvey,et al.  Attunement, Calibration, and Exploration in Fast Haptic Perceptual Learning , 2001, Journal of motor behavior.

[4]  Richard G. Carson,et al.  Spoon handling in two- to four year old children , 1997 .

[5]  W H Warren,et al.  Perceiving affordances: visual guidance of stair climbing. , 1984, Journal of experimental psychology. Human perception and performance.

[6]  Rob Withagen,et al.  Transfer of calibration in length perception by dynamic touch , 2004, Perception & psychophysics.

[7]  M T Turvey,et al.  Perceiving the width and height of a hand-held object by dynamic touch. , 1998, Journal of experimental psychology. Human perception and performance.

[8]  Raoul M Bongers,et al.  Variations of Tool and Task Characteristics Reveal That Tool-Use Postures Are Anticipated , 2004, Journal of motor behavior.

[9]  M T Turvey,et al.  Haptically perceiving the distances reachable with hand-held objects. , 1988, Journal of experimental psychology. Human perception and performance.

[10]  M. Turvey,et al.  Affordance, proper function, and the physical basis of perceived heaviness , 1999, Cognition.

[11]  M. Turvey,et al.  Somatosensory attunement to the rigid body laws , 2000, Experimental Brain Research.

[12]  Michael A Riley,et al.  Perceptual Behavior: Recurrence Analysis of a Haptic Exploratory Procedure , 2002, Perception.

[13]  M T Turvey,et al.  Eigenvectors of the inertia tensor and perceiving the orientation of a hand-held object by dynamic touch , 1992, Perception & psychophysics.

[14]  M. Turvey,et al.  Weight perception and the haptic size-weight illusion are functions of the inertia tensor. , 1996, Journal of experimental psychology. Human perception and performance.

[15]  Jeffrey B. Wagman,et al.  Affordances and Inertial Constraints on Tool Use , 2001 .

[16]  M. Turvey,et al.  Eigenvalues of the inertia tensor and exteroception by the “muscular sense” , 1994, Neuroscience.

[17]  Michael T. Turvey,et al.  Effortful touch with minimal movement , 1992 .

[18]  Jeffrey B Wagman,et al.  Haptically creating affordances: the user-tool interface. , 2003, Journal of experimental psychology. Applied.

[19]  S. Runeson,et al.  Kinematic specification of dynamics as an informational basis for person and action perception: Expe , 1983 .

[20]  M T Turvey,et al.  Inertia tensor and weight-percept models of length perception by static holding. , 2000, Journal of experimental psychology. Human perception and performance.

[21]  Kevin Shockley,et al.  Metamers in the haptic perception of heaviness and moveableness , 2004, Perception & psychophysics.

[22]  A. Smitsman,et al.  Geometries and Dynamics of a Rod Determine How It Is Used for Reaching , 2003, Journal of motor behavior.