Performance of a skilled motor task in virtual and real environments

Area of Science:

• Perceptual-motor control
• Virtual reality research
• Human-computer interaction

Background:

• Virtual environments (VEs) are increasingly used to study motor control.
• However, the performance differences between real-world (RW) and VE tasks require further investigation.
• Fine motor skill execution in VEs may present unique challenges not fully understood.

Purpose of the Study:

• To compare adult participants' performance on a perceptuo-motor task in both RW and VEs.
• To evaluate the impact of task dimensionality (3-D vs. 2.5-D) and contextual information on performance in VEs.
• To highlight the difficulties associated with fine motor control in virtual environments.

Main Methods:

• Three experiments were conducted with adult participants performing a hoop-passing task over a bent wire course.
• The task was presented in RW and three VE conditions: 3-D, 2.5-D without background, and 2.5-D with background.
• Performance was measured by the number of errors (hoop touching the wire).

Main Results:

• The VE condition resulted in approximately 18 times more errors than the RW task.
• The 2.5-D VE task was as difficult as the 3-D VE task.
• Adding background to the 2.5-D VE task increased errors compared to the other two VE conditions.

Conclusions:

• Performing fine motor tasks in VEs is significantly more difficult than in RW settings.
• Task dimensionality and spatial context influence performance difficulty within VEs.
• The challenges of fine motor control in VEs warrant greater attention in motor control research.