Motor Imagery May Incorporate Trial-to-Trial Error

André B. Valdez, Eric Amazeen

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The authors tested for 1/f noise in motor imagery (MI). Participants pointed and imagined pointing to a single target (Experiment 1), to targets of varied size (Experiment 2), and switched between pointing and grasping (Experiment 3). Experiment 1 showed comparable patterns of serial correlation in actual and imagined movement. Experiment 2 suggested increased correlation for MI and performance with increased task difficulty, perhaps reflecting adaptation to a more complex environment. Experiment 3 suggested a parallel decrease in correlation with task switching, perhaps reflecting discontinuity of mental set. Although present results do not conclusively reveal 1/f fluctuation, the emergent patterns suggest that MI could incorporate trial-to-trial error across a range of constraints.

Original languageEnglish (US)
Pages (from-to)241-256
Number of pages16
JournalJournal of motor behavior
Issue number4
StatePublished - 2010


  • 1/f noise
  • Fractal
  • Motor imagery
  • Simulation

ASJC Scopus subject areas

  • Biophysics
  • Orthopedics and Sports Medicine
  • Experimental and Cognitive Psychology
  • Cognitive Neuroscience


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