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• W2904378708 endingPage "e0208988" @default.
• W2904378708 startingPage "e0208988" @default.
• W2904378708 abstract "Although the natural haptic perception of textures includes active finger movements, it is unclear how closely perception and movements are linked. Here we investigated this question using oriented textures. Textures that are composed of periodically repeating grooves have a clear orientation defined by the grooves. The direction of finger movement relative to texture orientation determines the availability of temporal cues to the spatial period of the texture. These cues are absent during movements directed in line with texture orientation, whereas movements orthogonal to texture orientation maximize the temporal frequency of stimulation. This may optimize temporal cues. In Experiment 1 we tested whether texture perception gets more precise the more orthogonal the movement direction is to the texture. We systematically varied the movement direction within a 2IFC spatial period discrimination task. As expected, perception was more precise (lower discrimination thresholds) when finger movements were directed closer towards the texture orthogonal as compared to in parallel to the texture. In Experiment 2 we investigated whether people adjust movement directions to the texture orthogonal in free exploration. We recorded movement directions during free exploration of standard and comparison gratings. The standard gratings were clearly oriented. The comparison gratings did not have a clear orientation defined by grooves. Participants adjusted movement directions to the texture orthogonal only for clearly oriented textures (standards). The adjustment to texture orthogonal was present in the final movement but not in the first movement. This suggests that movement adjustment is based on sensory signals for texture orientation that were gathered over the course of exploration. In Experiment 3 we assessed whether the perception of texture orientation and movement adjustments are based on shared sensory signals. We determined perceptual thresholds for orientation discrimination and computed ‘movometric’ thresholds from the stroke-by-stroke adjustment of movement direction. Perception and movements were influenced by a common factor, the spatial period, suggesting that the same sensory signals for texture orientation contribute to both. We conclude that people optimize texture perception by adjusting their movements in directions that maximize temporal cue frequency. Adjustments are performed on the basis of sensory signals that are also used for perception." @default.
• W2904378708 created "2018-12-22" @default.
• W2904378708 creator A5002498043 @default.
• W2904378708 creator A5062527971 @default.
• W2904378708 date "2018-12-14" @default.
• W2904378708 modified "2023-10-01" @default.
• W2904378708 title "Interdependences between finger movement direction and haptic perception of oriented textures" @default.
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• W2904378708 doi "https://doi.org/10.1371/journal.pone.0208988" @default.
• W2904378708 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6294351" @default.
• W2904378708 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30550578" @default.
• W2904378708 hasPublicationYear "2018" @default.
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