This title appears in the Scientific Report :
2008
Please use the identifier:
http://dx.doi.org/10.1016/j.neuropsychologia.2008.03.011 in citations.
Predictive force programming in the grip-lift task: The role of memory links between arbitrary cues and object weight
Predictive force programming in the grip-lift task: The role of memory links between arbitrary cues and object weight
We tested the ability of healthy participants to learn an association between arbitrary sensory cues and the weight of an object to be lifted using a precision grip between the index finger and thumb. Right-handed participants performed a series of grip-lift tasks with each hand. In a first experime...
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Personal Name(s): | Ameli, M. |
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Dafotakis, M. / Fink, G. R. / Nowak, D. A. | |
Contributing Institute: |
Institut für Neurowissenschaften und Biophysik - Medizin; INB-3 |
Published in: | Neuropsychologia, 46 (2008) S. 2383 - 2388 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2008
|
Physical Description: |
2383 - 2388 |
PubMed ID: |
18455203 |
DOI: |
10.1016/j.neuropsychologia.2008.03.011 |
Document Type: |
Journal Article |
Research Program: |
Funktion und Dysfunktion des Nervensystems |
Series Title: |
Neuropsychologia
46 |
Subject (ZB): | |
Publikationsportal JuSER |
We tested the ability of healthy participants to learn an association between arbitrary sensory cues and the weight of an object to be lifted using a precision grip between the index finger and thumb. Right-handed participants performed a series of grip-lift tasks with each hand. In a first experiment, participants lifted two objects of equal visual appearance which unexpectedly and randomly changed their weight. In two subsequent experiments, the change in object weight was indicated by cues, which were presented (i) visually or (ii) auditorily. When no cue about the weight of the object to be lifted was presented, participants programmed grip force according to the most recent lift, regardless of the hand used. In contrast, participants were able to rapidly establish an association between a particular sensory cue with a given weight and scaled grip force precisely to the actual weight thereafter, regardless of the hand used or the sensory modality of the cue. We discuss our data within the theoretical concept of internal models. |