Frequency discrimination between and within line gratings by dynamic touch
Open accessAbstract
Line gratings were used to investigate the tactual discrimination thresholds for line frequency. In Experiment 1, participants were asked to discriminate between two gratings, each with a different line frequency. We used four standard frequencies in the eightfold range from 0.5 to 4 lines/cm. Thresholds were found to be constant at about 10.6%. In this experiment, we also measured hand speed and contact force. Hand speed was roughly in the range between 0.12 and 0.44 m/sec; contact force ranged from 0.62 to 2.76 N. In Experiment 2, we determined discrimination thresholds for line frequency transitions within a single grating. We used two frequencies and three transition lengths. The transition length had no effect on the threshold. In a third experiment, line frequency was modulated periodically. Varying the standard frequency and the size of the modulation period was found to have no effect on the discrimination thresholds. We conclude three things. First, Weber fractions for line frequency discrimination decrease as a function of line frequency within the experimental range. Second, discrimination thresholds are not altered by the length of the transition between two adjacent gratings with different line frequencies. And finally, the size of a modulation period in periodically modulated gratings is of no influence on the modulation detection threshold.
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The Weber-Fechner law applies to the perception of the spatial frequency of real gratings.
“The Weber-Flechner law applies to the perception of the spatial frequency of real gratings [28,29]”
From Eyes-Off Your Fingers: Gradual Surface Haptic Feedback Improves Eyes-Free Touchscreen Interaction (2022) · cites this paper as [29]
The General Discussion (page not provided) explicitly concludes that the Weber fraction is not constant for line-frequency discrimination. It reports that the fraction decreased as the frequency of the raised-line gratings increased within the experimental range, contrary to the claim that Weber’s law applies. (LLM, conf=0.88)
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Cites
Amplitude and Spatial-Period Discrimination in Sinusoidal Gratings by Dynamic Touch
Nefs, H. T., Kappers, A. M. L., & Koenderink, J. J. (2001) · Perception · doi:10.1068/p3217 · Cited by 47 · see citing works
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Amplitude and Spatial-Period Discrimination in Sinusoidal Gratings by Dynamic Touch
Nefs, H. T., Kappers, A. M. L., & Koenderink, J. J. (2001) · Perception · doi:10.1068/p3217 · Cited by 47 · see citing works
Self-citationEyes-Off Your Fingers: Gradual Surface Haptic Feedback Improves Eyes-Free Touchscreen Interaction
Bernard, C., Monnoyer, J., Ystad, S., & Wiertlewski, M. (2022) · CHI Conference on Human Factors in Computing Systems · doi:10.1145/3491102.3501872 · Cited by 19 · see citing works
- Authors
- Nefs, H. T., Kappers, A. M. L., & Koenderink, J. J.
- Affiliations
- Utrecht University (NL)
- Corresponding author
- Nefs, Harold T.
- Venue
- Perception & Psychophysics
- Published
- 2002-08
- Volume
- 64
- Issue
- 6
- Pages
- 969-980
- ISSN
- 0031-5117 (ISSN-L)
- 1532-5962
- OpenAlex
- W2008082918
- Cited by
- 26
- References
- 1
- Citations by year
- 2023: 1 · 2022: 2 · 2019: 2 · 2018: 1 · 2017: 1 · 2016: 4 · 2014: 1 · 2013: 1 · 2012: 1
- FWCI
- 0.00
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Perception & Psychophysics (publishedVersion)
- PubMed (publishedVersion)
- Utrecht University Repository (Utrecht University) (submittedVersion)
- VU Research Portal (submittedVersion)
- TU/e Research Portal (submittedVersion)
- Data Archiving and Networked Services (DANS) (submittedVersion)
- Funders
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Tactile and Sensory Interactions
- Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
- Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
- Keywords
- line frequencies, line gratings, dynamic touch, Weber fraction, discrimination thresholds, hand velocity, contact force, transition length, periodic modulation, tactile perception
- MeSH terms
- Adult, Cues, Discrimination, Psychological, Female, Humans, Male, Models, Theoretical, Sensory Thresholds, Touch, Visual Perception
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