The Adaptive Range of 1/f Isometric Force Production

Jacob J. Sosnoff; Andrew D. Valantine; Karl M. Newell

doi:10.1037/a0012731

The Adaptive Range of 1/f Isometric Force Production

Jacob J. Sosnoff, Andrew D. Valantine, Karl M. Newell

Research output: Contribution to journal › Article › peer-review

Abstract

The adaptive range of 1/f dynamics in isometric force output was investigated. Participants produced isometric force to targets with predictable demands (constant and sinusoidal) and 1/f noise waveforms (white, pink, brown, and black) that also varied in the frequency bandwidth represented in the force signal (0-4 Hz, 0-8 Hz, and 0-12 Hz). The range of within-trial 1/f force dynamics produced was between darker than pink noise and lighter than black noise according to task conditions. The exponent of the respective 1/f force dynamics decreased as the frequency bandwidth of the force signal increased. The findings reveal an adaptive though restricted range of 1/f force variation that is modulated by the dynamics of the task constraints.

Original language	English (US)
Pages (from-to)	439-446
Number of pages	8
Journal	Journal of Experimental Psychology: Human Perception and Performance
Volume	35
Issue number	2
DOIs	https://doi.org/10.1037/a0012731
State	Published - Apr 1 2009

Keywords

fractals
isometric force
motor control

ASJC Scopus subject areas

Experimental and Cognitive Psychology
Arts and Humanities (miscellaneous)
Behavioral Neuroscience

Access to Document

10.1037/a0012731

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