HapticV1, PubMed, Corpus, bibRecord, 000039

Temporal Modulations of Contact Force during Haptic Surface Exploration.

Identifieur interne : 000039 ( PubMed/Corpus ); précédent : 000038; suivant : 000040

Temporal Modulations of Contact Force during Haptic Surface Exploration.

Auteurs : Stephanie Mueller ; Sven Martin ; Michael Schwarz ; Martin Grunwald

Source :

PloS one [ 1932-6203 ] ; 2016.

RBID : pubmed:27073843

Abstract

Individuals constantly modulate their exploratory movements and adapt their internal hypotheses to incoming sensory information to achieve a thorough and realistic percept. Perception depends on the exploratory movements as well as influencing them. While this seems to be common sense, scientifically we know very little about the temporal dynamics during haptic exploration. To address this, we investigated the exploratory force modulations of two groups of healthy young adults during the exploration of grated surfaces with differing detection difficulty during successive (n = 20) and random stimulus presentation (n = 20). Results showed that exploratory force depended on stimulus properties and increased with increasing detection difficulty. Both experiments yielded the same direction of results with slightly smaller effects in the random stimulus presentation group. Across exploration time average fingertip force also increased. The biggest increase occurred systematically at the beginning (within the first 40 percent) of exploration time per stimulus indicating that most critical information is received during the initial contact phase and is directly transformed into the exploration procedure and force application. Furthermore, video-analyses and comparisons to our high temporal resolution data revealed strong dynamic changes in pressure application during test stimulus exploration with differences in the force dynamics and exploration strategies of simple and difficult stimuli.

DOI: 10.1371/journal.pone.0152897
PubMed: 27073843

Links to Exploration step

pubmed:27073843

Le document en format XML

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<author><name sortKey="Schwarz, Michael" sort="Schwarz, Michael" uniqKey="Schwarz M" first="Michael" last="Schwarz">Michael Schwarz</name>
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<front><div type="abstract" xml:lang="en">Individuals constantly modulate their exploratory movements and adapt their internal hypotheses to incoming sensory information to achieve a thorough and realistic percept. Perception depends on the exploratory movements as well as influencing them. While this seems to be common sense, scientifically we know very little about the temporal dynamics during haptic exploration. To address this, we investigated the exploratory force modulations of two groups of healthy young adults during the exploration of grated surfaces with differing detection difficulty during successive (n = 20) and random stimulus presentation (n = 20). Results showed that exploratory force depended on stimulus properties and increased with increasing detection difficulty. Both experiments yielded the same direction of results with slightly smaller effects in the random stimulus presentation group. Across exploration time average fingertip force also increased. The biggest increase occurred systematically at the beginning (within the first 40 percent) of exploration time per stimulus indicating that most critical information is received during the initial contact phase and is directly transformed into the exploration procedure and force application. Furthermore, video-analyses and comparisons to our high temporal resolution data revealed strong dynamic changes in pressure application during test stimulus exploration with differences in the force dynamics and exploration strategies of simple and difficult stimuli.</div>
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	Serveur d'exploration sur les dispositifs haptiques
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Temporal Modulations of Contact Force during Haptic Surface Exploration.

Temporal Modulations of Contact Force during Haptic Surface Exploration.

Source :

Abstract

Links to Exploration step

Le document en format XML

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