Abstract：
:This study examined precision-grip force applied to an instrumented test object held aloft while the weight of the object was predictably varied by transporting and placing loads (50, 100, or 200 g) atop the test object. Transport of the loads was performed either by the subject or the experimenter. Grip force was examined in four non-amputee control subjects and in the anatomical and prosthetic hand of a subject with a prosthetic device. As subjects transported the load, anticipatory grip-force changes occurred in the anatomical hands and prosthetic hand, which were scaled in relation to the load. When the experimenter transported the load to the anatomical hands of control subjects or the prosthetic user, anticipatory increases in grip force occurred that also were scaled in relation to load. However, when the experimenter transported the load to the prosthetic hand, anticipatory grip-force adjustments were absent. During the phase in which the load was being assumed by the postural hand, grip forces in the anatomical hands and prosthetic hand were further scaled to load demands. Ability to adapt grip force in the prosthetic hand during this phase suggested that the subject was utilizing sensory information from the residual limb to adjust grip force. Thus, while anticipatory changes precede the process of adaptation to load changes, actual sensory consequences resulting from added weight remain necessary to fully adapt grip force to load demands, even for the prosthetic user.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Weeks DL,Wallace SA,Noteboom JTdoi
10.1007/s002210000337keywords:
subject
Has Abstractpub_date
2000-06-01 00:00:00pages
404-10issue
3eissn
0014-4819issn
1432-1106journal_volume
132pub_type
杂志文章abstract：:The present study used the redundant target paradigm on healthy subjects to investigate functional hemispheric asymmetries and interhemispheric cooperation in the perception of emotions from faces. In Experiment 1 participants responded to checkerboards presented either unilaterally to the left (LVF) or right visual h...
journal_title：Experimental brain research
pub_type： 杂志文章
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journal_title：Experimental brain research
pub_type： 杂志文章
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pub_type： 杂志文章
doi：10.1007/s00221-011-2893-7
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pub_type： 杂志文章
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pub_type： 杂志文章
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pub_type： 杂志文章
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更新日期：1989-01-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00235886
更新日期：1982-01-01 00:00:00
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更新日期：1998-02-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-016-4866-3
更新日期：2017-04-01 00:00:00
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pub_type： 临床试验,杂志文章
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更新日期：1984-01-01 00:00:00
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journal_title：Experimental brain research
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更新日期：1975-12-22 00:00:00
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journal_title：Experimental brain research
pub_type： 临床试验,杂志文章
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更新日期：2005-09-01 00:00:00
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pub_type： 杂志文章
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更新日期：1979-09-01 00:00:00
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更新日期：2003-10-01 00:00:00
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pub_type： 杂志文章
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更新日期：2004-08-01 00:00:00
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pub_type： 杂志文章
doi：10.1007/BF00236047
更新日期：1986-01-01 00:00:00
