Asymmetries in initiation of aiming movements in schizophrenia

2018 ◽  
Vol 109 ◽  
pp. 200-207
Author(s):  
Giulia Lisi ◽  
Daniele Nico ◽  
Michele Ribolsi ◽  
Cinzia Niolu ◽  
Francesco Lacquaniti ◽  
...  
Keyword(s):  
Aiming Movements

On-Line versus Off-Line Control of Rapid Aiming Movements

1993 ◽  
Vol 25 (4) ◽  
pp. 275-279 ◽  
Author(s):  
Jean Blouin ◽  
C. Bard ◽  
N. Teasdale ◽  
M. Fleury
Keyword(s):  
Aiming Movements ◽  
On Line ◽  
Rapid Aiming Movements

Age-Related Differences in the Control of Spatial Aiming Movements

1992 ◽  
Vol 63 (4) ◽  
pp. 366-372 ◽  
Author(s):  
Noreen L. Goggin ◽  
Harry J. Meeuwsen
Keyword(s):  
Aiming Movements ◽  
Age Related

Path Curvature in Workspace and in Joint Space: Evidence for Coexisting Coordinative Rules in Aiming

Motor Control ◽  
1998 ◽  
Vol 2 (4) ◽  
pp. 331-351 ◽  
Author(s):  
Edwin Van Thiel ◽  
Ruud G.J. Meulenbroek ◽  
Wouter Hulstijn
Keyword(s):  
Joint Space ◽  
Line Production ◽  
Vertical Movements ◽  
Space Planning ◽  
Aiming Movements ◽  
Trajectory Formation ◽  
Straight Line ◽  
Bottom Left ◽  
Path Curvature ◽  
Point To Point

In this study we tried to establish whether point-to-point aiming movements are planned in workspace, joint space, or both. Eight right-handed subjects performed horizontal, vertical, and diagonal aiming movements on a transversal plane. Movements were performed at several speeds. Curvature variations of the hand and corresponding joint-space paths were investigated as a function of position, direction, and speed. Straightness of hand paths predominated for vertical movements but was systematically violated for horizontal and top-right to bottom-left movements. Furthermore, the hand-path curvature of the latter movements increased with speed. Joint-space paths showed more deviation from a straight line than hand paths except for top-left to bottom-right movements in which the paths were equally curved. A comparison of normalized path curvatures at the hand and joint level indicated that in aiming, the coordinative rule of straight-line production seems to apply to both workspace and joint-space planning. The present findings confirm Kawato's (1996) views that optimization processes operate concurrently at the two control levels of arm-trajectory formation under study.

scholarly journals The integration of sequential aiming movements: Switching hand and direction at the first target

2016 ◽  
Vol 164 ◽  
pp. 181-187 ◽  
Author(s):  
G.P. Lawrence ◽  
Michael A. Khan ◽  
Thomas M. Mottram ◽  
Jos J. Adam ◽  
Eric Buckolz
Keyword(s):  
Aiming Movements ◽  
Sequential Aiming

Programming strategies for rapid aiming movements under simple and choice reaction time conditions

2006 ◽  
Vol 59 (3) ◽  
pp. 524-542 ◽  
Author(s):  
Michael A. Khan ◽  
Gavin P. Lawrence ◽  
Eric Buckolz ◽  
Ian M. Franks
Keyword(s):  
Reaction Time ◽  
Choice Reaction Time ◽  
Aiming Movements ◽  
Rapid Aiming Movements

scholarly journals Distance versus position information in the control of aiming movements

1997 ◽  
Vol 20 (2) ◽  
pp. 323-324 ◽  
Author(s):  
P. C. W. van Wieringen ◽  
P. J. Beek
Keyword(s):  
Kinematic Model ◽  
Arm Movements ◽  
Position Information ◽  
Aiming Movements ◽  
Vector Integration

Information about positions, from which differences in position are computed (as proposed in the vector-integration- to-endpoint model), provides a more plausible perceptual basis for the control of goal-directed arm movements than information about distance (as proposed in the kinematic model).

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