JN Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
 QUICK SEARCH:   [advanced]


     


J Neurophysiol (November 5, 2003). doi:10.1152/jn.00168.2003
This Article
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
91/3/1260    most recent
00168.2003v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Ohki, Y.
Right arrow Articles by Watanabe, K.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Ohki, Y.
Right arrow Articles by Watanabe, K.
Submitted on February 24, 2003
Accepted on October 29, 2003

Dependence of reactive responses in human bimanual finger movements on sensory feedback and auditory cues

Yukari Ohki1* and Kanae Watanabe2

1 Physiology, Kyorin University School of Medicine, Tokyo, Japan
2 Sports Science, Shinshu University, Nagano, Japan

* To whom correspondence should be addressed. E-mail: ohkiy{at}kyorin-u.ac.jp.

We examined the effects of repetitive experience of feedback events and cue signals on adaptation of bimanual reactive response, both of which can be used to predict load forces on hand-held objects. Normal human subjects used bimanual index fingers to hold two plates mounted on separate torque motors. Sensory-driven reactive forces from the fingers were measured during concurrent loading of both plates or isolated loading of the left plate. After repeated experiences of single load conditions, right and left fingers increased normal forces in a coordinated manner during concurrent loading, while the left finger responded almost exclusively during isolated loading of the left plate. However, after switching load conditions from concurrent to isolated load, or vice versa, several trials were needed to adapt to the new condition, as was clearly observed in the dynamic phase of responses from the right finger. Adaptation depends on the number of feedback experiences, and specifically on prediction error, showing intermediate predictions between the two conditions. Thus, influences of the previous experiences show similar properties to those observed in self-generated movement, which were reported previously. In addition, auditory cues informing subjects of coming load conditions also partially adapted responses to these conditions. The neuronal center for reactive responses is therefore influenced by both previous experience and cue signals, inducing the appropriate responses for the predicted sensory inputs.




This article has been cited by other articles:


Home page
J. Neurophysiol.Home page
S. Shibuya and Y. Ohki
Cutaneous Inputs Can Activate the Ipsilateral Primary Motor Cortex During Bimanual Sensory-Driven Movements in Humans
J Neurophysiol, December 1, 2004; 92(6): 3200 - 3209.
[Abstract] [Full Text] [PDF]




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
Visit Other APS Journals Online
Copyright © 2003 by the The American Physiological Society.