Abstract:
:Movement sequences such as typing or tapping display important interactions among finger movements arising from anticipatory motion (preparing for upcoming events) and coupling (non-independence among fingers). We examined pianists' finger tapping for the influence of cognitive chunking processes and biomechanical coupling constraints. In a synchronization-continuation task, pianists repeatedly tapped four-finger sequences that differed in terms of the chunks that formed subsequences and in the transitions among physically adjacent or non-adjacent fingers. Chunking influenced intertap intervals, regardless of the particular fingers tapped; the final tap of each chunk was lengthened and less variable relative to other taps. The particular fingers tapped influenced peak finger heights, consistency of motion, and velocity-acceleration patterns, regardless of chunking. Thus, cognitive constraints influenced timing, whereas biomechanical factors influenced motion trajectories. These findings provide an important caveat for study of anticipatory motion by documenting the influence of biomechanical coupling on motion trajectories.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Loehr JD,Palmer Cdoi
10.1007/s00221-006-0760-8subject
Has Abstractpub_date
2007-04-01 00:00:00pages
518-28issue
4eissn
0014-4819issn
1432-1106journal_volume
178pub_type
杂志文章abstract::The ventral part of the third visual cortical complex, the ventral posterior area (VP) or V3v, is located between the ventral half of visual areas V2 and V4. Because of its location and the physiological properties of its neurons, VP has been considered to be involved in the ventral stream visual areas. The ventral st...
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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pub_type: 杂志文章
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