Abstract：
:To investigate the role of gravitational cues in the learning of a dynamic balancing task, we placed blindfolded subjects in a device programmed with inverted pendulum dynamics about the yaw axis. Subjects used a joystick to try and maintain a stable orientation at the direction of balance during 20 100 s-long trials. They pressed a trigger button on the joystick to indicate whenever they felt at the direction of balance. Three groups of ten subjects each participated. One group balanced with their body and the yaw axis vertical, and thus did not have gravitational cues to help them to determine their angular position. They showed minimal learning, inaccurate indications of the direction of balance, and a characteristic pattern of positional drifting away from the balance point. A second group balanced with the yaw axis pitched 45° from the gravitational vertical and had gravity relevant position cues. The third group balanced with their yaw axis horizontal where they had gravity-dependent cues about body position in yaw. Groups 2 and 3 showed better initial balancing performance and more learning across trials than Group 1. These results indicate that in the absence of vision, the integration of transient semicircular canal and somatosensory signals about angular acceleration is insufficient for determining angular position during dynamic balancing; direct position-dependent gravity cues are necessary.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Vimal VP,Lackner JR,DiZio Pdoi
10.1007/s00221-018-5216-4subject
Has Abstractpub_date
2018-05-01 00:00:00pages
1321-1330issue
5eissn
0014-4819issn
1432-1106pii
10.1007/s00221-018-5216-4journal_volume
236pub_type
杂志文章abstract：:We investigated how lateralized choices of hand and target are influenced by previous behavior. Three monkeys retrieved food pellets following cues indicating the location of available food pellet targets, and the hand that could be used to acquire a target. In pseudo-randomized trials, the monkeys could retrieve food...
journal_title：Experimental brain research
pub_type： 杂志文章
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journal_title：Experimental brain research
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journal_title：Experimental brain research
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journal_title：Experimental brain research
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journal_title：Experimental brain research
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journal_title：Experimental brain research
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journal_title：Experimental brain research
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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：1998-04-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/pl00005729
更新日期：1997-08-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00239212
更新日期：1983-01-01 00:00:00
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doi：10.1007/s00221-010-2396-y
更新日期：2010-09-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00270687
更新日期：1987-01-01 00:00:00
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journal_title：Experimental brain research
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doi：10.1007/s00221-004-1859-4
更新日期：2004-08-01 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：2001-02-01 00:00:00
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pub_type： 杂志文章
doi：10.1007/BF00228725
更新日期：1996-10-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00241531
更新日期：1994-01-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-006-0536-1
更新日期：2006-10-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00235656
更新日期：1986-01-01 00:00:00
