Event-related brain potentials for goal-related power grips

PLoS One. 2013 Jul 2;8(7):e68501. doi: 10.1371/journal.pone.0068501. Print 2013.

Abstract

Recent research has shown that neurophysiological activation during action planning depends on the orientation to initial or final action goals for precision grips. However, the neural signature for a distinct class of grasping, power grips, is still unknown. The aim of the present study was to differentiate between cerebral activity, by means of event-related potentials (ERPs), and its temporal organization during power grips executed with an emphasis on either the initial or final parts of movement sequences. In a grasp and transportation task, visual cues emphasized either the grip (the immediate goal) or the target location (the final goal). ERPs differed between immediate and final goal-cued conditions, suggesting different means of operation dependent on goal-relatedness. Differences in mean amplitude occurred earlier for power grips than for recently reported precision grips time-locked to grasping over parieto-occipital areas. Time-locked to final object placement, differences occurred within a similar time window for power and precision grips over frontal areas. These results suggest that a parieto-frontal network of activation is of crucial importance for grasp planning and execution. Our results indicate that power grip preparation and execution for goal-related actions are controlled by similar neural mechanisms as have been observed during precision grips, but with a distinct temporal pattern.

Publication types

  • Clinical Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Analysis of Variance
  • Brain / physiology*
  • Brain Mapping
  • Cues
  • Electroencephalography
  • Evoked Potentials / physiology*
  • Female
  • Frontal Lobe / physiology
  • Goals*
  • Hand Strength / physiology*
  • Humans
  • Male
  • Movement / physiology
  • Nerve Net / physiology
  • Parietal Lobe / physiology
  • Photic Stimulation
  • Psychomotor Performance / physiology
  • Reaction Time / physiology
  • Young Adult

Grants and funding

This research was supported by German Research Foundation Grant DFG EXC 277 “Cognitive Interaction Technology” (CITEC)(www.cit-ec.de/). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.