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Egocentric/allocentric and coordinate/categorical haptic encoding in blind people.
Cogn Process. 2012 Aug; 13 Suppl 1:S313-7.CP

Abstract

In this research, the impact of visual experience on the capacity to use egocentric (body-centered) and allocentric (object-centered) representations in combination with categorical (invariant non-metric) and coordinate (variable metric) spatial relations was examined. Participants memorized through haptic (congenitally blind, adventitiously blind, and blindfolded) and haptic + visual (sighted) exploration triads of 3D objects and then they were asked to judge: "which object was closest/farthest to you?" (egocentric-coordinate); "which object was on your left/right?" (egocentric-categorical); "which object was closest/farthest to a target object (e.g., cone)?" (allocentric-coordinate); "which object was on the left/right of the target object (e.g., cone)?" (allocentric-categorical). The results showed a slowdown in processing time when congenitally blind people provided allocentric-coordinate judgments and adventitiously blind people egocentric-categorical judgments. Moreover, in egocentric judgments, adventitiously blind participants were less accurate than sighted participants. However, the overall performance was quite good and this supports the idea that the differences observed are more quantitative than qualitative. The theoretical implications of these results are discussed.

Authors+Show Affiliations

Laboratory of Cognitive Science and Immersive Virtual Reality, Department of Psychology, Second University of Naples, Viale Ellittico, 33, 81100, Caserta, Italy. gennaro.ruggiero@unina2.itNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

22806679

Citation

Ruggiero, Gennaro, et al. "Egocentric/allocentric and Coordinate/categorical Haptic Encoding in Blind People." Cognitive Processing, vol. 13 Suppl 1, 2012, pp. S313-7.
Ruggiero G, Ruotolo F, Iachini T. Egocentric/allocentric and coordinate/categorical haptic encoding in blind people. Cogn Process. 2012;13 Suppl 1:S313-7.
Ruggiero, G., Ruotolo, F., & Iachini, T. (2012). Egocentric/allocentric and coordinate/categorical haptic encoding in blind people. Cognitive Processing, 13 Suppl 1, S313-7. https://doi.org/10.1007/s10339-012-0504-6
Ruggiero G, Ruotolo F, Iachini T. Egocentric/allocentric and Coordinate/categorical Haptic Encoding in Blind People. Cogn Process. 2012;13 Suppl 1:S313-7. PubMed PMID: 22806679.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Egocentric/allocentric and coordinate/categorical haptic encoding in blind people. AU - Ruggiero,Gennaro, AU - Ruotolo,Francesco, AU - Iachini,Tina, PY - 2012/7/19/entrez PY - 2012/7/19/pubmed PY - 2013/1/26/medline SP - S313 EP - 7 JF - Cognitive processing JO - Cogn Process VL - 13 Suppl 1 N2 - In this research, the impact of visual experience on the capacity to use egocentric (body-centered) and allocentric (object-centered) representations in combination with categorical (invariant non-metric) and coordinate (variable metric) spatial relations was examined. Participants memorized through haptic (congenitally blind, adventitiously blind, and blindfolded) and haptic + visual (sighted) exploration triads of 3D objects and then they were asked to judge: "which object was closest/farthest to you?" (egocentric-coordinate); "which object was on your left/right?" (egocentric-categorical); "which object was closest/farthest to a target object (e.g., cone)?" (allocentric-coordinate); "which object was on the left/right of the target object (e.g., cone)?" (allocentric-categorical). The results showed a slowdown in processing time when congenitally blind people provided allocentric-coordinate judgments and adventitiously blind people egocentric-categorical judgments. Moreover, in egocentric judgments, adventitiously blind participants were less accurate than sighted participants. However, the overall performance was quite good and this supports the idea that the differences observed are more quantitative than qualitative. The theoretical implications of these results are discussed. SN - 1612-4790 UR - https://www.unboundmedicine.com/medline/citation/22806679/Egocentric/allocentric_and_coordinate/categorical_haptic_encoding_in_blind_people_ L2 - https://dx.doi.org/10.1007/s10339-012-0504-6 DB - PRIME DP - Unbound Medicine ER -