Humans rapidly estimate expected gain in movement planning

Psychol Sci. 2006 Nov;17(11):981-8. doi: 10.1111/j.1467-9280.2006.01816.x.

Abstract

We studied human movement planning in tasks in which subjects selected one of two goals that differed in expected gain. Each goal configuration consisted of a target circle and a partially overlapping penalty circle. Rapid hits into the target region led to a monetary bonus; accidental hits into the penalty region incurred a penalty. The outcomes assigned to target and penalty regions and the spatial arrangement of those regions were varied. Subjects preferred configurations with higher expected gain whether selection involved a rapid pointing movement or a choice by key press. Movements executed to select one of two goal configurations exhibited the same movement dynamics as pointing movements directed at a single configuration, and were executed with the same high efficiency. Our results suggest that humans choose near-optimal strategies when planning their movement, and can base their selection of strategy on a rapid judgment about the expected gain associated with possible movement goals.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Choice Behavior
  • Color Perception*
  • Decision Making*
  • Discrimination Learning
  • Female
  • Humans
  • Male
  • Motivation*
  • Orientation*
  • Pattern Recognition, Visual*
  • Perceptual Masking
  • Probability Learning
  • Psychomotor Performance*
  • Reaction Time*
  • Set, Psychology*