The effects of reward on width discrimination and tactile processing in humans

Detalhes bibliográficos
Autor(a) principal: Oliveira, Luís Pedro Marques de
Data de Publicação: 2021
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/33822
Resumo: Tactile information processing, during width discrimination, is associated with multiple cognitive processes such as reward. Even though this has been extensively studied in rodents, there is still very little information on the neurobiological basis of this process in humans. Here, the effects of monetary reward in active tactile width discrimination performance in humans were studied. For this, electrophysiological signals and neurochemical measurements were performed. Analysis of results did not demonstrate an effect of monetary reward in behavioural performance nor in response latency. Also, no changes were found in cortisol levels. Meanwhile, analysis of the electrophysiological signal revealed changes in the power of all frequency bands, with particularly large differences being present in the low gamma frequency band (35-40Hz). Altogether, these results suggest that monetary reward changes neurophysiological processing of active tactile width discrimination, but no evidence was found regarding changes in behavioural performance.
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spelling The effects of reward on width discrimination and tactile processing in humansEEGTactile processingWidth discriminationNeurochemistryNeuropsychologyActive touchTactile information processing, during width discrimination, is associated with multiple cognitive processes such as reward. Even though this has been extensively studied in rodents, there is still very little information on the neurobiological basis of this process in humans. Here, the effects of monetary reward in active tactile width discrimination performance in humans were studied. For this, electrophysiological signals and neurochemical measurements were performed. Analysis of results did not demonstrate an effect of monetary reward in behavioural performance nor in response latency. Also, no changes were found in cortisol levels. Meanwhile, analysis of the electrophysiological signal revealed changes in the power of all frequency bands, with particularly large differences being present in the low gamma frequency band (35-40Hz). Altogether, these results suggest that monetary reward changes neurophysiological processing of active tactile width discrimination, but no evidence was found regarding changes in behavioural performance.O processamento de informação tátil durante a discriminação de distância pelo toque envolve múltiplos processos cognitivos, entre eles a recompensa. Apesar de este processo ter sido extensivamente descrito em roedores, ainda há pouca informação relativamente à base neruobiológica deste tipo de processamento em humanos. Neste estudo analisou-se o efeito da atribuição de recompensas monetárias associadas ao desempenho numa tarefa de discriminação de distância pelo toque. Para tal utilizou-se o registo eletroencefalográfico e a análise neuroquímica. A análise dos resultados não demonstrou qualquer efeito da recompensa monetária no desempenho ou na latência de resposta dos sujeitos. Também não se verificou nenhuma alteração clara na quantidade de cortisol medido na saliva. A análise do sinal eletrofisiológico demonstrou que a introdução da recompensa monetária levou a alterações em todas as bandas de frequências, sendo que a maior expressão se verificou na banda gama baixa (30-45Hz). No seu conjunto, estes resultados sugerem que a recompensa monetária altera o processamento neuronal da distância através do toque, não se tendo, no entanto, verificado qualquer evidência no sentido de alterar o desempenho comportamental.2022-12-12T00:00:00Z2021-12-09T00:00:00Z2021-12-09info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10773/33822engOliveira, Luís Pedro Marques deinfo:eu-repo/semantics/embargoedAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-05-06T04:37:20Zoai:ria.ua.pt:10773/33822Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-06T04:37:20Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv The effects of reward on width discrimination and tactile processing in humans
title The effects of reward on width discrimination and tactile processing in humans
spellingShingle The effects of reward on width discrimination and tactile processing in humans
Oliveira, Luís Pedro Marques de
EEG
Tactile processing
Width discrimination
Neurochemistry
Neuropsychology
Active touch
title_short The effects of reward on width discrimination and tactile processing in humans
title_full The effects of reward on width discrimination and tactile processing in humans
title_fullStr The effects of reward on width discrimination and tactile processing in humans
title_full_unstemmed The effects of reward on width discrimination and tactile processing in humans
title_sort The effects of reward on width discrimination and tactile processing in humans
author Oliveira, Luís Pedro Marques de
author_facet Oliveira, Luís Pedro Marques de
author_role author
dc.contributor.author.fl_str_mv Oliveira, Luís Pedro Marques de
dc.subject.por.fl_str_mv EEG
Tactile processing
Width discrimination
Neurochemistry
Neuropsychology
Active touch
topic EEG
Tactile processing
Width discrimination
Neurochemistry
Neuropsychology
Active touch
description Tactile information processing, during width discrimination, is associated with multiple cognitive processes such as reward. Even though this has been extensively studied in rodents, there is still very little information on the neurobiological basis of this process in humans. Here, the effects of monetary reward in active tactile width discrimination performance in humans were studied. For this, electrophysiological signals and neurochemical measurements were performed. Analysis of results did not demonstrate an effect of monetary reward in behavioural performance nor in response latency. Also, no changes were found in cortisol levels. Meanwhile, analysis of the electrophysiological signal revealed changes in the power of all frequency bands, with particularly large differences being present in the low gamma frequency band (35-40Hz). Altogether, these results suggest that monetary reward changes neurophysiological processing of active tactile width discrimination, but no evidence was found regarding changes in behavioural performance.
publishDate 2021
dc.date.none.fl_str_mv 2021-12-09T00:00:00Z
2021-12-09
2022-12-12T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10773/33822
url http://hdl.handle.net/10773/33822
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/embargoedAccess
eu_rights_str_mv embargoedAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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