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Gepubliceerd in: Psychological Research 4/2022

05-08-2021 | Original Article

Haptic object recognition based on shape relates to visual object recognition ability

Auteurs: Jason K. Chow, Thomas J. Palmeri, Isabel Gauthier

Gepubliceerd in: Psychological Research | Uitgave 4/2022

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Abstract

Visual object recognition depends in large part on a domain-general ability (Richler et al. Psychol Rev 126(2): 226–251, 2019). Given evidence pointing towards shared mechanisms for object perception across vision and touch, we ask whether individual differences in haptic and visual object recognition are related. We use existing validated visual tests to estimate visual object recognition ability and relate it to performance on two novel tests of haptic object recognition ability (n = 66). One test includes complex objects that participants chose to explore with a hand grasp. The other test uses a simpler stimulus set that participants chose to explore with just their fingertips. Only performance on the haptic test with complex stimuli correlated with visual object recognition ability, suggesting a shared source of variance across task structures, stimuli, and modalities. A follow-up study using a visual version of the haptic test with simple stimuli shows a correlation with the original visual tests, suggesting that the limited complexity of the stimuli did not limit correlation with visual object recognition ability. Instead, we propose that the manner of exploration may be a critical factor in whether a haptic test relates to visual object recognition ability. Our results suggest a perceptual ability that spans at least across vision and touch, however, it may not be recruited during just fingertip exploration.
Voetnoten
1
The 3D models have three spatially distinct feature dimensions (nosecone, wings, and rocket) connected by a central hull. Each feature had two variants modeled and the stimulus space was created by morphing between the variants as extremes.
 
2
As trials are not randomized across participants, any possible biases due to stimuli distribution are shared across all participants. Our critical interest is variability across tasks between participants, the absolute performance within a single task is not as informative.
 
3
Tightly controlling exposure timing is difficult in haptic testing thus we opt not to vary first object exposure timing for difficulty as in vMatch-Sheinbugs, nonetheless, this is a relatively short period for haptic perception.
 
4
We believe learning on the preceding vNOMT using Sheinbugs is the main reason for this because our subjects have very comparable performance on the vNOMT with Ziggerins as in previous work (65.2% in Richler et al., 2019; 61% in Sunday et al., 2021).
 
5
Note that we completed data collection on Study 1 at the beginning of the COVID-19 crisis and are therefore unable to collect any data for haptic tests for the near future.
 
Literatuur
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Metagegevens
Titel
Haptic object recognition based on shape relates to visual object recognition ability
Auteurs
Jason K. Chow
Thomas J. Palmeri
Isabel Gauthier
Publicatiedatum
05-08-2021
Uitgeverij
Springer Berlin Heidelberg
Gepubliceerd in
Psychological Research / Uitgave 4/2022
Print ISSN: 0340-0727
Elektronisch ISSN: 1430-2772
DOI
https://doi.org/10.1007/s00426-021-01560-z

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