Cookies Policy
X

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Full Access Somatosensory amplification and illusory tactile sensations

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Somatosensory amplification and illusory tactile sensations

  • HTML
  • PDF
Add to Favorites
You must be logged in to use this functionality

image of Seeing and Perceiving
For more content, see Multisensory Research and Spatial Vision.

Experimental studies have demonstrated that it is possible to induce convincing bodily distortions in neurologically healthy individuals, through cross-modal manipulations; such as the rubber hand illusion (Botvinick and Cohen, 1998), the parchment skin illusion (Jousmaki and Hari, 1998) and the Somatic Signal Detection Task (SSDT; Lloyd et al., 2008). It has been shown previously with the SSDT that when a tactile stimulus is presented with a simultaneous light flash, individuals show both increased sensitivity to the tactile stimulus, and the tendency to report feeling the stimulus even when one was not presented; a tendency which varies greatly between individuals but remains constant over time within an individual (McKenzie et al., 2010). Further studies into tactile stimulus discrimination using the Somatic Signal Discrimination Task (SSDiT) have also shown that a concurrent light led to a significant improvement in people’s ability to discriminate ‘weak’ tactile stimuli from ‘strong’ ones, as well as a bias towards reporting any tactile stimulus as ‘strong’ (Poliakoff et al., in preparation), indicating that the light may influence both early and later stages of processing. The current study investigated whether the tendency to report higher numbers of false alarms when carrying out the SSDT is correlated with the tendency to experience higher numbers of cross-modal ‘enhancements’ of weak tactile signals (leading to classifications of ‘weak’ stimuli as strong, and ‘strong’ stimuli as ‘stronger’). Results will be discussed.

Affiliations: 1: University of Nottingham Malaysia Campus, MY

Experimental studies have demonstrated that it is possible to induce convincing bodily distortions in neurologically healthy individuals, through cross-modal manipulations; such as the rubber hand illusion (Botvinick and Cohen, 1998), the parchment skin illusion (Jousmaki and Hari, 1998) and the Somatic Signal Detection Task (SSDT; Lloyd et al., 2008). It has been shown previously with the SSDT that when a tactile stimulus is presented with a simultaneous light flash, individuals show both increased sensitivity to the tactile stimulus, and the tendency to report feeling the stimulus even when one was not presented; a tendency which varies greatly between individuals but remains constant over time within an individual (McKenzie et al., 2010). Further studies into tactile stimulus discrimination using the Somatic Signal Discrimination Task (SSDiT) have also shown that a concurrent light led to a significant improvement in people’s ability to discriminate ‘weak’ tactile stimuli from ‘strong’ ones, as well as a bias towards reporting any tactile stimulus as ‘strong’ (Poliakoff et al., in preparation), indicating that the light may influence both early and later stages of processing. The current study investigated whether the tendency to report higher numbers of false alarms when carrying out the SSDT is correlated with the tendency to experience higher numbers of cross-modal ‘enhancements’ of weak tactile signals (leading to classifications of ‘weak’ stimuli as strong, and ‘strong’ stimuli as ‘stronger’). Results will be discussed.

Loading

Full text loading...

/deliver/18784763/25/0/18784763_025_00_S031_text.html;jsessionid=EdfHZAoTb1qw0vIRwbZTAyXt.x-brill-live-03?itemId=/content/journals/10.1163/187847612x646569&mimeType=html&fmt=ahah
/content/journals/10.1163/187847612x646569
Loading

Data & Media loading...

1. Botvinick M. , Cohen J. ( 1998). "Rubber hands ‘feel’ touch that eyes see", Nature Vol 391, 756. http://dx.doi.org/10.1038/35784
2. Jousmaki V. , Hari R. ( 1998). "Parchment-skin illusion: Sound-biased touch", Current Biology Vol 8, 190. http://dx.doi.org/10.1016/S0960-9822(98)70120-4
3. Lloyd D. M. , Mason L. , Brown R. J. , Poliakoff E. ( 2008). "Development of a paradigm for measuringsomatic disturbance in clinical populations with medically unexplained symptoms", Journal of Psychosomatic Research Vol 64, 2124. http://dx.doi.org/10.1016/j.jpsychores.2007.06.004
4. McKenzie K. J. , Poliakoff E. , Brown R. , Lloyd D. M. ( 2010). "Now you feel it, now you don’t: How robust is the phenomenon of illusory tactile experience?" Perception Vol 39, 839850. http://dx.doi.org/10.1068/p6401
5. Poliakoff E. , Puntis S. , McKenzie K. J. , Lawrence A. , Brown R. J. , Lloyd D. M. "Vision affects the judgment of the strength of tactile events", Experimental Brain Research, in preparation.
http://brill.metastore.ingenta.com/content/journals/10.1163/187847612x646569
Loading
Loading

Article metrics loading...

/content/journals/10.1163/187847612x646569
2012-01-01
2016-12-03

Sign-in

Can't access your account?
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation