The oculomotor resonance effect in spatial–numerical mapping

Myachykov, Andriy, Cangelosi, Angelo, Ellis, Rob and Fischer, Martin (2015) The oculomotor resonance effect in spatial–numerical mapping. Acta Psychologica, 161. pp. 162-169. ISSN 0001-6918

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Abstract

We investigated automatic Spatial–Numerical Association of Response Codes (SNARC) effect in auditory number processing. Two experiments continually measured spatial characteristics of ocular drift at central fixation during and after auditory number presentation. Consistent with the notion of a spatially oriented mental number line, we found spontaneous magnitude-dependent gaze adjustments, both with and without a concurrent saccadic task. This fixation adjustment (1) had a small-number/left-lateralized bias and (2) it was biphasic as it emerged for a short time around the point of lexical access and it received later robust representation around following number onset. This pattern suggests a two-step mechanism of sensorimotor mapping between numbers and space—a first-pass bottom-up activation followed by a top-down andmore robust horizontal SNARC. Our results inform theories of number processing as well as simulation-based approaches to cognition by identifying the characteristics of an oculomotor resonance phenomenon.

Item Type:	Article
Uncontrolled Keywords:	Attention; Embodied cognition; Eye movements; Oculomotor resonance; Ocular drift; SNARC
Subjects:	C800 Psychology
Department:	Faculties > Health and Life Sciences > Psychology
Depositing User:	Dr Andriy Myachykov
Date Deposited:	25 Sep 2015 08:31
Last Modified:	12 Oct 2019 17:27
URI:	http://nrl.northumbria.ac.uk/id/eprint/23885

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