The perception of affective and discriminative touch in blind individuals

2023
journal article
article
cris.lastimport.wos2024-04-09T21:30:27Z
dc.abstract.enEnhanced tactile acuity in blindness is among the most widely reported results of neuroplasticity following prolonged visual deprivation. However, tactile submodalities other than discriminative touch are profoundly understudied in blind individuals. Here, we examined the influence of blindness on two tactile submodalities, affective and discriminative touch, the former being vital for social functioning and emotional processing. We tested 36 blind individuals and 36 age- and sex-matched sighted volunteers. In Experiment 1, we measured the perception of affective tactile signals by asking participants to rate the pleasantness of touch delivered on the palm (nonhairy skin, sparsely innervated with C tactile [CT] fibers) or the forearm (hairy skin, densely innervated with CT fibers) in a CT-optimal versus a CT-nonoptimal manner using a paradigm grounded in studies on tactile sensory neurophysiology. In Experiment 2, we implemented a classic task assessing discriminative touch abilities, the grating orientation task. We found that blind individuals rated the touch as more pleasant when delivered on the palm than on the forearm, while the opposite pattern was observed for sighted participants, who rated stimulation on the forearm as more pleasant than stimulation on the palm. We also replicated the previous findings showing enhanced discriminative tactile acuity in blind individuals. Altogether, our results suggest that blind individuals might experience affective touch differently than sighted individuals, with relatively greater pleasantness perceived on the palm. These results provide a broader insight into somatosensory perception in blind individuals, for the first time taking into consideration the socioemotional aspect of touch.pl
dc.affiliationWydział Filozoficzny : Instytut Psychologiipl
dc.contributor.authorRadziun, Dominikapl
dc.contributor.authorCrucianelli, Laurapl
dc.contributor.authorKorczyk, Maksymilian - 230400 pl
dc.contributor.authorSzwed, Marcin - 213989 pl
dc.contributor.authorEhrsson, H. Henrikpl
dc.date.accessioned2024-01-31T13:19:57Z
dc.date.available2024-01-31T13:19:57Z
dc.date.issued2023pl
dc.date.openaccess0
dc.description.accesstimew momencie opublikowania
dc.description.versionostateczna wersja wydawcy
dc.description.volume444pl
dc.identifier.articleid114361pl
dc.identifier.doi10.1016/j.bbr.2023.114361pl
dc.identifier.eissn1872-7549pl
dc.identifier.issn0166-4328pl
dc.identifier.urihttps://ruj.uj.edu.pl/xmlui/handle/item/326524
dc.languageengpl
dc.language.containerengpl
dc.pbn.affiliationDziedzina nauk społecznych : psychologiapl
dc.rightsDodaję tylko opis bibliograficzny*
dc.rights.licenceCC-BY
dc.rights.uri*
dc.share.typeotwarte czasopismo
dc.subject.enblindnesspl
dc.subject.enneuroplasticitypl
dc.subject.enaffective touchpl
dc.subject.endiscriminative touchpl
dc.subtypeArticlepl
dc.titleThe perception of affective and discriminative touch in blind individualspl
dc.title.journalBehavioural Brain Researchpl
dc.typeJournalArticlepl
dspace.entity.typePublication
cris.lastimport.wos
2024-04-09T21:30:27Z
dc.abstract.enpl
Enhanced tactile acuity in blindness is among the most widely reported results of neuroplasticity following prolonged visual deprivation. However, tactile submodalities other than discriminative touch are profoundly understudied in blind individuals. Here, we examined the influence of blindness on two tactile submodalities, affective and discriminative touch, the former being vital for social functioning and emotional processing. We tested 36 blind individuals and 36 age- and sex-matched sighted volunteers. In Experiment 1, we measured the perception of affective tactile signals by asking participants to rate the pleasantness of touch delivered on the palm (nonhairy skin, sparsely innervated with C tactile [CT] fibers) or the forearm (hairy skin, densely innervated with CT fibers) in a CT-optimal versus a CT-nonoptimal manner using a paradigm grounded in studies on tactile sensory neurophysiology. In Experiment 2, we implemented a classic task assessing discriminative touch abilities, the grating orientation task. We found that blind individuals rated the touch as more pleasant when delivered on the palm than on the forearm, while the opposite pattern was observed for sighted participants, who rated stimulation on the forearm as more pleasant than stimulation on the palm. We also replicated the previous findings showing enhanced discriminative tactile acuity in blind individuals. Altogether, our results suggest that blind individuals might experience affective touch differently than sighted individuals, with relatively greater pleasantness perceived on the palm. These results provide a broader insight into somatosensory perception in blind individuals, for the first time taking into consideration the socioemotional aspect of touch.
dc.affiliationpl
Wydział Filozoficzny : Instytut Psychologii
dc.contributor.authorpl
Radziun, Dominika
dc.contributor.authorpl
Crucianelli, Laura
dc.contributor.authorpl
Korczyk, Maksymilian - 230400
dc.contributor.authorpl
Szwed, Marcin - 213989
dc.contributor.authorpl
Ehrsson, H. Henrik
dc.date.accessioned
2024-01-31T13:19:57Z
dc.date.available
2024-01-31T13:19:57Z
dc.date.issuedpl
2023
dc.date.openaccess
0
dc.description.accesstime
w momencie opublikowania
dc.description.version
ostateczna wersja wydawcy
dc.description.volumepl
444
dc.identifier.articleidpl
114361
dc.identifier.doipl
10.1016/j.bbr.2023.114361
dc.identifier.eissnpl
1872-7549
dc.identifier.issnpl
0166-4328
dc.identifier.uri
https://ruj.uj.edu.pl/xmlui/handle/item/326524
dc.languagepl
eng
dc.language.containerpl
eng
dc.pbn.affiliationpl
Dziedzina nauk społecznych : psychologia
dc.rights*
Dodaję tylko opis bibliograficzny
dc.rights.licence
CC-BY
dc.rights.uri*
dc.share.type
otwarte czasopismo
dc.subject.enpl
blindness
dc.subject.enpl
neuroplasticity
dc.subject.enpl
affective touch
dc.subject.enpl
discriminative touch
dc.subtypepl
Article
dc.titlepl
The perception of affective and discriminative touch in blind individuals
dc.title.journalpl
Behavioural Brain Research
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations

* The migration of download and view statistics prior to the date of April 8, 2024 is in progress.

Views
2
Views per month
Views per city
Ashburn
2

No access

No Thumbnail Available