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Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping

Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping

Published on: April 21, 2023

Improved change detection with nearby hands.

Philip Tseng¹, Bruce Bridgeman

¹Psychology Department, University of California, Santa Cruz, SS2, Rm 277, 1156 High Street, Santa Cruz, CA 95064, USA. tsengphilip@gmail.com

Experimental Brain Research

|February 1, 2011

Summary

This summary is machine-generated.

Placing hands near a display improves visual change detection and memory. The right hand provides the most benefit, with both hands together offering a superadditive boost in performance.

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Area of Science:

Cognitive Psychology
Visual Perception
Human-Computer Interaction

Background:

Altered visual processing near hands has been suggested.
The role of hand proximity in visual attention and memory is not fully understood.

Purpose of the Study:

To investigate if an observer's hands near a display facilitate change detection.
To determine the contribution of individual hands and their combined effect on visual performance.

Main Methods:

Three experiments were conducted where participants performed a change detection task.
Hand positions (near or away from the display) were manipulated.
Visual short-term memory capacity and change detection accuracy were measured.

Main Results:

Change detection accuracy and visual short-term memory capacity increased when hands were near the display.
The right hand showed a significant facilitation effect, while the left hand showed minimal effect.
Both hands together resulted in a superadditive performance boost, exceeding the sum of individual effects.
The right hand's presence biased attention towards the right visual field.

Conclusions:

Observer's hands, particularly the right hand, near a display enhance visual change detection and memory.
The combined presence of both hands yields a synergistic improvement in performance.
Hand proximity influences attentional allocation within the visual field.