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Target Search and Inspection Strategies in Haptic Search.

Metzger, A., Toscani, M., Valsecchi, M. and Drewing, K., 2021. Target Search and Inspection Strategies in Haptic Search. IEEE Transactions on Haptics, 14 (4), 804-815.

Full text available as:

metzger_2021a.pdf - Accepted Version
Available under License Creative Commons Attribution Non-commercial.


DOI: 10.1109/TOH.2021.3076847


Haptic search is a common everyday task, usually consisting of two processes: target search and target analysis. During target search we need to know where our fingers are in space, remember the already completed path and the outline of the remaining space. During target analysis we need to understand whether the detected potential target is the desired one. Here we characterized dynamics of exploratory movements in these two processes. In our experiments participants searched for a particular configuration of symbols on a rectangular tactile display. We observed that participants preferentially moved the hand parallel to the edges of the tactile display during target search, which possibly eased orientation within the search space. After a potential target was detected by any of the fingers, there was higher probability that subsequent exploration was performed by the index or the middle finger. At the same time, these fingers dramatically slowed down. Being in contact with the potential target, the index and the middle finger moved within a smaller area than the other fingers, which rather seemed to move away to leave them space. These results suggest that the middle and the index finger are specialized for fine analysis in haptic search.

Item Type:Article
Uncontrolled Keywords:Fingers; Hand; Haptic Technology; Humans; Reaction Time; Touch; Touch Perception
Group:Faculty of Science & Technology
ID Code:37176
Deposited By: Symplectic RT2
Deposited On:11 Jul 2022 15:08
Last Modified:11 Jul 2022 15:08


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