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Touchscreen Sustained Attention Task SAT for Rats

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Visualising numerals: An ERPs study with the attentional SNARC task.

Mario Pinto¹, Enrico Fattorini¹, Stefano Lasaponara¹

¹Dipartimento di Psicologia 39, Università Degli Studi di Roma ' Sapienza', Roma, Italy; Fondazione Santa Lucia IRCCS, Roma, Italy.

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior

|February 8, 2018

Summary

This summary is machine-generated.

Imagining Arabic numbers on a mental number line speeds up visual target detection. This mental imagery enhances brain activity in visual processing areas, revealing insights into numerical cognition.

Keywords:

ERPs Imagery Numbers SNARC Spatial attention

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Area of Science:

Cognitive Neuroscience
Neuroscience
Psychology

Background:

Mental manipulation of numbers is crucial for mathematical calculations.
The neural underpinnings of spatial number representation are not well understood.

Purpose of the Study:

To investigate how imagining Arabic numbers on a mental number line affects visual perception.
To explore the neural mechanisms involved in spatial number representation.

Main Methods:

Participants imagined numbers on a horizontal mental number line.
Visual target detection performance was measured.
Electrophysiological activity was recorded using electroencephalography (EEG).

Main Results:

Imagining number positions on a mental number line accelerated target detection at congruent visual locations.
This effect was specific to spatial imagery, not magnitude classification.
Imagery modulated early visual cortex activity (C1 component) and extrastriate cortex.
Later, attention-modulated responses were not affected by imagery.

Conclusions:

Mental number line imagery creates sensory-like spatial representations.
These representations influence early visual processing, aiding spatial tasks.
This provides novel insights into the neural basis of numerical cognition and mental spatialization.