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Does bimanual grasping of the Müller-Lyer illusion provide evidence for a functional segregation of dorsal and ventral streams?
Neuropsychologia. 2012 Dec; 50(14):3392-402.N

Abstract

Studies claiming a differential processing of visual illusions for perception and action have been subjected to many challenges. One criticism is that attentional demands were mismatched between the perception and action tasks. Dewar and Carey (2006) reexamined this argument by comparing bimanual grasping to bimanual size estimation and concluded that manual size estimation (ManEst) was affected by the illusion to a greater extent than grasping, supporting the case for two functionally distinct streams of visual processing. We tested whether this result may be due to their use of closed loop visual conditions by replicating their study under both closed and open loop conditions. We found that the difference in illusion effects between grasping and ManEst disappeared under open loop conditions, indicating that Dewar and Carey's findings can be explained by the availability of visual feedback and not a perception/action dissociation. We also discuss potential shortcomings of bimanual designs.

Authors+Show Affiliations

Universität Hamburg, Hamburg, Germany. rachel.foster@uni-hamburg.deNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23010064

Citation

Foster, Rachel M., et al. "Does Bimanual Grasping of the Müller-Lyer Illusion Provide Evidence for a Functional Segregation of Dorsal and Ventral Streams?" Neuropsychologia, vol. 50, no. 14, 2012, pp. 3392-402.
Foster RM, Kleinholdermann U, Leifheit S, et al. Does bimanual grasping of the Müller-Lyer illusion provide evidence for a functional segregation of dorsal and ventral streams? Neuropsychologia. 2012;50(14):3392-402.
Foster, R. M., Kleinholdermann, U., Leifheit, S., & Franz, V. H. (2012). Does bimanual grasping of the Müller-Lyer illusion provide evidence for a functional segregation of dorsal and ventral streams? Neuropsychologia, 50(14), 3392-402. https://doi.org/10.1016/j.neuropsychologia.2012.09.026
Foster RM, et al. Does Bimanual Grasping of the Müller-Lyer Illusion Provide Evidence for a Functional Segregation of Dorsal and Ventral Streams. Neuropsychologia. 2012;50(14):3392-402. PubMed PMID: 23010064.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Does bimanual grasping of the Müller-Lyer illusion provide evidence for a functional segregation of dorsal and ventral streams? AU - Foster,Rachel M, AU - Kleinholdermann,Urs, AU - Leifheit,Silke, AU - Franz,Volker H, Y1 - 2012/09/23/ PY - 2012/02/17/received PY - 2012/09/11/revised PY - 2012/09/14/accepted PY - 2012/9/27/entrez PY - 2012/9/27/pubmed PY - 2013/6/1/medline SP - 3392 EP - 402 JF - Neuropsychologia JO - Neuropsychologia VL - 50 IS - 14 N2 - Studies claiming a differential processing of visual illusions for perception and action have been subjected to many challenges. One criticism is that attentional demands were mismatched between the perception and action tasks. Dewar and Carey (2006) reexamined this argument by comparing bimanual grasping to bimanual size estimation and concluded that manual size estimation (ManEst) was affected by the illusion to a greater extent than grasping, supporting the case for two functionally distinct streams of visual processing. We tested whether this result may be due to their use of closed loop visual conditions by replicating their study under both closed and open loop conditions. We found that the difference in illusion effects between grasping and ManEst disappeared under open loop conditions, indicating that Dewar and Carey's findings can be explained by the availability of visual feedback and not a perception/action dissociation. We also discuss potential shortcomings of bimanual designs. SN - 1873-3514 UR - https://www.unboundmedicine.com/medline/citation/23010064/Does_bimanual_grasping_of_the_Müller_Lyer_illusion_provide_evidence_for_a_functional_segregation_of_dorsal_and_ventral_streams L2 - http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=23010064.ui DB - PRIME DP - Unbound Medicine ER -