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Related Experiment Video

Updated: Jun 7, 2026

A Tactile Automated Passive-Finger Stimulator (TAPS)

A Tactile Automated Passive-Finger Stimulator (TAPS)

Published on: June 3, 2009

Tapping effects on numerical bisection.

Zaira Cattaneo¹, Micaela Fantino, Juha Silvanto

¹Department of Psychology, University of Milano-Bicocca, Piazza dell'Ateneo Nuovo, Milan, Italy. zaira.cattaneo@unimib.it

Experimental Brain Research

|October 22, 2010

Summary

This summary is machine-generated.

Spatial tapping tasks influence auditory numerical processing. Performing tapping in left space biases numerical judgments leftward, while right-space tapping reduces this bias, demonstrating spatial-numerical interactions.

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Area of Science:

Cognitive Psychology
Neuroscience
Spatial Cognition

Background:

The mental number line (MNL) is a theoretical construct representing numerical magnitudes.
Existing research suggests MNL activation influences spatial perception and representation.
The interaction between numerical cognition and spatial processing remains an active area of research.

Purpose of the Study:

To investigate the influence of spatial motor tasks on auditory numerical processing.
To determine if performing a tapping task in different peripersonal spaces affects numerical interval bisection.
To explore the bidirectional relationship between external spatial representations and internal numerical cognition.

Main Methods:

Participants performed a numerical interval bisection task while blindfolded.
A concurrent tapping task was administered using the left or right hand in fronto-central, fronto-left, or fronto-right peripersonal space.
Numerical bisection errors were analyzed to assess the impact of spatial tapping.

Main Results:

Tapping in left peripersonal space amplified leftward numerical bisection bias.
Tapping in right peripersonal space reduced leftward numerical bisection bias.
These spatial effects were independent of the hand used, but absent in fronto-central space.

Conclusions:

Spatial location of motor actions significantly modulates auditory numerical processing.
Findings support a bidirectional interaction between the mental number line and external spatial representations.
Motor activity in peripersonal space influences abstract numerical cognition, highlighting embodied cognition principles.