Normalization Models of Contextualized Touch
| Autor: | Md. Shoaibur Rahman, Jeffrey M. Yau |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Normalization (statistics)
Intensity discrimination Visual perception Tactile discrimination InformationSystems_INFORMATIONINTERFACESANDPRESENTATION(e.g. HCI) Perception media_common.quotation_subject Space (commercial competition) Psychology Sensory cue media_common Cognitive psychology Task (project management) |
| Zdroj: | SSRN Electronic Journal. |
| ISSN: | 1556-5068 |
| Popis: | Divisive normalization is a canonical computation that explains contextual modulation of visual perception and neural responses in the visual system. Conceivably, normalization also underlies contextual modulation of bimanual touch, a perceptual process that likely requires combining what is felt on the hands with where the hands are located in space. Here, we evaluated participants’ ability to perform tactile discrimination tasks on one hand while we manipulated the tactile cues experienced on the other hand and the relative positions of the hands. We found that touch experienced on one hand systematically modulates how touch is perceived on the other hand. Notably, bimanual interaction patterns and their sensitivity to hand locations differed depending on whether participants performed a frequency or intensity discrimination task. In rigorous model competition, we found that these feature-dependent bimanual modulation patterns were well explained by distinct cue combination models that each comprised divisive normalization. Our findings indicate that, while feature-specific rules govern bimanual touch, normalization underlies contextual modulation between the hands. |
| Databáze: | OpenAIRE |
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