Publicação
Correlatos de Ressonância Magnética Funcional na Aplicação de um Creme Cosmético
| Resumo: | The use of cosmetic products has increased significantly for decades. Cosmetics associated with scents and the somatosensory component of their application elicit certain emotions in their users, altering their affective states. Studies evaluating the influence of cosmetics on people's behavior indicate that they can positively condition well-being and self-esteem, increasing the positive side of people's emotions. By producing a sequence of images of brain activity through changes in oxygenation and blood flow in the cerebral cortex, functional magnetic resonance imaging (fMRI) makes it possible to identify brain regions associated with certain cognitive processes, as well as the functional study of the brain. In this study, the neurophysiological evaluation of a cosmetic cream was carried out using fMRI data from 20 participants. The aim was to analyze the brain regions activated by the three tasks studied: touch without application of a product; application of a neutral cream; and application of the test cream. The data was pre-processed and analyzed using FSL software, resulting in individual and comparative functional response activation maps. MRIcroGL software was then used together with the MNI152 standard brain and the AAL atlas to analyze the regions activated in the tasks. The results of this dissertation are in line with the existing literature, as brain regions previously associated with tactile stimulation were activated for the three tasks studied. Regarding the brain structures activated only in the test cream application task and the structures differentially activated in the test cream vs the neutral cream application tasks, suggest that the application of the test cream incited certain emotions in the participants and invoked memories. |
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| Autores principais: | Monteiro, Maria Beatriz Serra |
| Assunto: | Avaliação Cosmética Creme Estimulação Tátil Ressonância Magnética Funcional Ativação Cerebral Teses de mestrado - 2024 |
| Ano: | 2024 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade de Lisboa |
| Idioma: | português |
| Origem: | Repositório da Universidade de Lisboa |
| Resumo: | The use of cosmetic products has increased significantly for decades. Cosmetics associated with scents and the somatosensory component of their application elicit certain emotions in their users, altering their affective states. Studies evaluating the influence of cosmetics on people's behavior indicate that they can positively condition well-being and self-esteem, increasing the positive side of people's emotions. By producing a sequence of images of brain activity through changes in oxygenation and blood flow in the cerebral cortex, functional magnetic resonance imaging (fMRI) makes it possible to identify brain regions associated with certain cognitive processes, as well as the functional study of the brain. In this study, the neurophysiological evaluation of a cosmetic cream was carried out using fMRI data from 20 participants. The aim was to analyze the brain regions activated by the three tasks studied: touch without application of a product; application of a neutral cream; and application of the test cream. The data was pre-processed and analyzed using FSL software, resulting in individual and comparative functional response activation maps. MRIcroGL software was then used together with the MNI152 standard brain and the AAL atlas to analyze the regions activated in the tasks. The results of this dissertation are in line with the existing literature, as brain regions previously associated with tactile stimulation were activated for the three tasks studied. Regarding the brain structures activated only in the test cream application task and the structures differentially activated in the test cream vs the neutral cream application tasks, suggest that the application of the test cream incited certain emotions in the participants and invoked memories. |
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