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Tactile Sensory Mechanisms of the Human Hand and Hairy Skin


Principal Investigator: Johan Wessberg

Our research is focused on the human sense of touch, from the signalling of receptors in the skin to brain mechanisms for processing of tactile information.

We record the activity of single, identified nerve fibres from tactile receptors using microneurography, where a thin needle electrode is inserted through the skin in awake human subjects. We analyze the response of tactile receptors to a variety of stimuli, for example a robot-controlled brush or indenting device. We study brain mechanisms using multi-electrode electroencephalography (EEG) or functional magnetic resonance imaging (fMRI), and we use advanced mathematical and statistical techniques to analyze the data. Finally, we probe the sensations elicited by tactile stimuli using psychophysical techniques, where the participant is asked to rate a sensation on a scale or determine the threshold for detection of a stimulus.

By combining these techniques, we aim to improve our understanding of the sense of touch by establishing the link between the neural messages provided by the peripheral sensory receptors, and discriminative and emotional aspects of sensory perception.

Johan Wessberg

Principal Investigator
Professor, MD, PhD

Publications GUP
Publications PubMed

Contact
E-mail: johan.wessberg@gu.se
Tel.: +46 31 786 3506
Visiting and postal addresses

Page Manager: Annie Sundling|Last update: 9/1/2015
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