Finding the spatial-numerical association of responsecodes (SNARC) in signed numbers: notational effectsin accessing number representation

Chinello, Alessandro and de Hevia, Maria Dolores and Geraci, Carlo and Girelli, Luisa (2012) Finding the spatial-numerical association of responsecodes (SNARC) in signed numbers: notational effectsin accessing number representation. Functional Neurology : New Trends in Interventional Neurosciences, XXVII (3). pp. 177-185. ISSN 0393-5264

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Abstract

The present study investigates basic numerical pro-cessing in deaf signers and hearing individuals by eval-uating notational effects (Arabic digits vs Italian signlanguage number signs) and response modality (manu-al vs pedal) in a parity judgment task. Overall, a stan-dard SNARC effect emerged in both groups, suggest-ing similar numerical representation in hearing anddeaf individuals. With the exception of Italian sign lan-guage stimuli in the hearing group, this effect appliedto all stimuli notations and to both response modalities.In line with the special status of signs, the visuospatialcomplexity of finger configurations (i.e. number of ex-tended fingers) affected the performance of the hearinggroup to a greater extent. Finally, the SNARC effectemerged systematically across lateralized effectors(manual/pedal response), challenging the hypothesisthat the stimulus-response compatibility effect is spe-cific to the effectors associated with the production ofwritten and sign language. As for parity processing,both groups were similarly influenced by the parity in-formation conveyed by the dominant hand, indicatingthe compositional nature of number signs irrespectiveof the preferred language modality.

Item Type: Article
Subjects: 600 Tecnologia - Scienze applicate > 610 Medicina e salute (Classificare qui la tecnologia dei servizi medici) > 616 Malattie (classificare qui la Clinica medica, la medicina basata sull'evidenza, la Medicina interna, la Medicina sperimentale) > 616.8 Malattie del sistema nervoso e disturbi mentali (Classificare qui la Neuropsichiatria, la Neurologia)
Depositing User: Chiara Bisogno
Date Deposited: 10 Sep 2019 12:57
Last Modified: 10 Sep 2019 14:44
URI: http://eprints.bice.rm.cnr.it/id/eprint/5262

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