Gravitational and Muscular Variables in Perceiving Rod Extent by Wielding

Three experiments are reported, which examined the relation between the percep- tion of the distance reachable with a hand-held rod that can be wielded but not seen and the rod's resistance to having its rotational speed changed by application of a torque. In these experiments, subjects wielded any given rod about an axis intermediate between its endpoints. The subject's task was to adjust a visible, movable surface to coincide with where he or she could reach with the given rod if allowed to hold it at its proximal end. Two experiments considered the effects of wielding a rod at different orientations to the pull of gravity. Rods were wielded either within a plane roughly perpendicular to the ground or within a plane roughly parallel to the ground. Plane of wielding did not affect the patterning of perceived reachable distances as a function of the various conditions, which included variations in the positioning of grasp and the positioning of a mass affixed to the rods. The patterning of the moments of ...

[1]  M T Turvey,et al.  Perceiving extents of rods by wielding: haptic diagonalization and decomposition of the inertia tensor. , 1989, Journal of experimental psychology. Human perception and performance.

[2]  H. Solomon,et al.  Movement-produced invariants in haptic explorations: An example of a self-organizing, information-driven, intentional system , 1988 .

[3]  Geoffrey P. Bingham,et al.  Task-specific devices and the perceptual bottleneck☆ , 1988 .

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

[5]  Gilbert Strang,et al.  Introduction to applied mathematics , 1988 .

[6]  J. Koenderink,et al.  Exterospecific component of the motion parallax field. , 1981, Journal of the Optical Society of America.

[7]  P. N. Kugler,et al.  1 On the Concept of Coordinative Structures as Dissipative Structures: I. Theoretical Lines of Convergence* , 1980 .

[8]  J. Gibson.  The Ecological Approach to Visual Perception , 1979 .

[9]  Simpson Dc,et al.  The functioning hand, the human advantage. , 1976 .

[10]  W. Simpson,et al.  “Feeling” with a Stick , 1968, Perceptual and motor skills.

[11]  J. Gibson.  The Senses Considered As Perceptual Systems , 1967 .

[12]  C. E. Springer,et al.  Geometry and Analysis of Projective Spaces , 1967 .

[13]  I. S. Sokolnikoff.  Tensor Analysis: Theory and Applications to Geometry and Mechanics of Continua , 1964 .

[14]  A. Sommerfeld,et al.  Mechanics: Lectures on Theoretical Physics , 1964 .

[15]  I. M. Yaglom,et al.  Geometric Transformations I: Isometries , 1962 .

[16]  I. M. Yaglom,et al.  Geometric Transformations I , 1962 .

[17]  H. Coxeter,et al.  Introduction to Geometry , 1964, The Mathematical Gazette.

[18]  B. Friedman.  Principles and Techniques of Applied Mathematics , 1956 .

[19]  F. B. Hildebrand,et al.  Methods of applied mathematics , 1953 .

[20]  C. Lanczos.  The variational principles of mechanics , 1949 .

[21]  Philip M. Morse,et al.  Methods of Mathematical Physics , 1947, The Mathematical Gazette.

[22]  D. Katz.  Der Aufbau der Tastwelt , 1925 .

[23]  A. Baker.  On the Non-Visual Perception of the Length of Horizontally Whipped Rods , 1922 .

[24]  Erna Shults.  On the Non-Visual Perception of the Length of Vertically Whipped Rods , 1922 .