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The spatio-temporal architecture of everyday manual behavior.


ABSTRACT: In everyday activities, humans move alike to manipulate objects. Prior works suggest that hand movements are built by a limited set of basic building blocks consisting of a set of common postures. However, how the low dimensionality of hand movements supports the adaptability and flexibility of natural behavior is unknown. Through a sensorized glove, we collected kinematics data from thirty-six participants preparing and having breakfast in naturalistic conditions. By means of an unbiased analysis, we identified a repertoire of hand states. Then, we tracked their transitions over time. We found that manual behavior can be described in space through a complex organization of basic configurations. These, even in an unconstrained experiment, recurred across subjects. A specific temporal structure, highly consistent within the sample, seems to integrate such identified hand shapes to realize skilled movements. These findings suggest that the simplification of the motor commands unravels in the temporal dimension more than in the spatial one.

SUBMITTER: Sili D 

PROVIDER: S-EPMC10256758 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature

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The spatio-temporal architecture of everyday manual behavior.

Sili Daniele D   De Giorgi Chiara C   Pizzuti Alessandra A   Spezialetti Matteo M   de Pasquale Francesco F   Betti Viviana V  

Scientific reports 20230609 1


In everyday activities, humans move alike to manipulate objects. Prior works suggest that hand movements are built by a limited set of basic building blocks consisting of a set of common postures. However, how the low dimensionality of hand movements supports the adaptability and flexibility of natural behavior is unknown. Through a sensorized glove, we collected kinematics data from thirty-six participants preparing and having breakfast in naturalistic conditions. By means of an unbiased analys  ...[more]

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