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Is Hand Selection Modulated by Cognitive-perceptual Load?

Jiali Liang¹, Krista Wilkinson², Robert L Sainburg³

¹Department of Communication Sciences and Disorders, The Pennsylvania State University, University Park, PA 16802, USA.

|November 14, 2017

Summary

This summary is machine-generated.

Cognitive load influences hand selection for reaching tasks. Increased cognitive-perceptual load led to more dominant hand use and more midline-crossing reaches, suggesting cognitive resources manage movement costs.

Keywords:

cognitive–perceptual load hand selection reaching task difficulty

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Area of Science:

Neuroscience
Cognitive Psychology
Biomechanics

Background:

Hand selection for reaching tasks is influenced by task difficulty.
Biomechanical and kinematic factors may predict hand selection patterns.
Predictive cost analysis is suggested to play a role in hand selection.

Purpose of the Study:

To investigate the influence of cognitive-perceptual loading on hand selection decisions.
To test the hypothesis that hand selection prediction recruits cognitive resources.
To determine if cognitive load affects the choice of hand for reaching tasks.

Main Methods:

A visual search task with varying cognitive-perceptual load levels was employed.
Hand selection for reaching tasks was assessed under different cognitive loads.
Data were collected to analyze the relationship between cognitive load and hand choice.

Main Results:

Increased cognitive-perceptual load led to more frequent selection of the dominant hand.
Cognitive-perceptual loading increased the frequency of cross-midline reaches with both hands.
Preliminary data suggest a significant influence of cognitive load on hand selection.

Conclusions:

Cognitive processes are engaged to avoid biomechanically costly actions, such as crossing the midline.
The decision to cross the midline requires cognitive resources.
Cognitive-perceptual load impacts motor control strategies for reaching tasks.