DSpace Coleção: PPGNEC

Análise eletrofisiológica do reconhecimento facial após o acidente vascular encefálico: um estudo com o protocolo de estimulação visual periódica rápida

2026-06-28T06:16:10Z

Título: Análise eletrofisiológica do reconhecimento facial após o acidente vascular encefálico: um estudo com o protocolo de estimulação visual periódica rápida Autor(es): Nascimento, Paulo Frassinetti Delfino do Orientador: Alves, Nelson Torro Abstract: This thesis investigated the neurophysiological markers of facial processing in healthy elderly individuals and post-Cerebrovascular Accident (CVA) patients. The central objective was to validate the applicability and sensitivity of the Fast Periodic Visual Stimulation (FPVS- Oddball) protocol coupled with EEG as an assessment tool. The methodology, structured across three studies, utilized the FPVS-Oddball paradigm to compare young adults, healthy elderly individuals, and post-CVA patients (with right-hemisphere (RH) or left-hemisphere (LH) lesions) in tasks involving recognition (face vs. object), facial identity discrimination, and discrimination of facial emotional expressions (joy/anger vs. neutral). The protocol is based on measuring neural synchronization at a base frequency (e.g., 6 Hz) to evaluate general visual processing, and at an Oddball frequency (e.g., 1.2 Hz) to assess specific high-order discrimination. Neurophysiological findings indicated that while healthy aging modulates this capacity, CVA induces a pronounced deficit. The results revealed a functional dissociation: whereas low-level visual processing (base frequency) was preserved in the clinical group, a drastic reduction or absence of the specific neural response (Oddball) for discriminating identities and emotions was observed. This impairment was significantly more pronounced in patients with RH lesions, corroborating the dominance of this hemisphere for complex facial functions. It is concluded that the FPVS-Oddball constitutes an objective, rapid, and sensitive tool with high potential for diagnosing and monitoring deficits in social cognition within clinical populations. Editor: Universidade Federal da Paraíba Tipo: Tese

Intervenção online de mindfulness no ambiente de trabalho efeitos sobre o estresse e a qualidade de vida de operadores de telemarketing

2026-06-04T06:11:25Z

Título: Intervenção online de mindfulness no ambiente de trabalho efeitos sobre o estresse e a qualidade de vida de operadores de telemarketing Autor(es): Monteiro, Raissa Ester Maia Orientador: Lopez, Luiz Carlos Serramo Abstract: Stress brings a range of maladaptive consequences to well-being. It stands out as one of the major risk factors for workers' health, leading to pathologies that harm both the body and the mind, significantly compromising quality of life. The practice of mindfulness is understood as an important therapeutic tool for stress reduction, through the observation of experiences as they occur, prioritizing the present moment. The present study aimed to investigate the therapeutic effects of online mindfulness interventions on stress levels and well-being among telemarketing operators. To achieve this, three studies were conducted. The first, in the format of a literature review, intended to introduce the topic with key concepts and themes that support the research. The second, in the format of a mediation article, aimed to explore how the mindfulness trait could play a significant mediating role in the relationship between psychological quality of life and stress levels among call center professionals. And finally, the third article, structured as a randomized clinical trial, sought to evaluate the impact of an online mindfulness intervention on stress levels and quality of life among telemarketing operators. Specifically regarding the studies developed through online data collection and quantitative analysis procedures, two groups were studied: an experimental group (Group A) and a waitlist control group (Group B). The experimental group received an intervention consisting of four asynchronous video sessions containing mindfulness practices, each approximately 20 minutes long, with one video sent per week over four weeks. Participants also received audio recordings and illustrative and theoretical booklets designed to offer further support for the mindfulness practices. The waitlist control group likewise received the same videos, recordings, and booklets. However, unlike Group A, which completed the post-intervention and follow-up questionnaires after the intervention, Group B completed the post-intervention and follow-up assessments before receiving the intervention protocol. Five instruments were selected for data collection: (i) a sociodemographic questionnaire; (ii) the Depression, Anxiety, and Stress Scale (DASS-21); (iii) the Five Facet Mindfulness Questionnaire (FFMQ-BR); (iv) the SelfCompassion Scale (SCS-BR); and (v) the World Health Organization Quality of Life Scale (WHOQOL-BREF). Instruments were applied at three distinct moments: pre-intervention, postintervention, and four-week follow-up. The study was conducted in accordance with the ethical principles outlined in Resolution n. 466/2012. For data analysis, descriptive and inferential statistics were calculated using the SPSS software. An intention-to-treat analysis was performed. Overall, the three articles indicated that mindfulness practices contribute to stress reduction among telemarketing operators. Editor: Universidade Federal da Paraíba Tipo: Tese

Efeitos do óleo essencial de Rosmarinus Officinalis L. na cognição humana: revisão sistemática

2026-05-17T06:10:34Z

Título: Efeitos do óleo essencial de Rosmarinus Officinalis L. na cognição humana: revisão sistemática Autor(es): Pacífico, Heloisa de Freitas Orientador: Pordeus, Liana Clébia de Morais Abstract: One of the alternative therapies is aromatherapy and it has done by extracting essential oil. Rosmarinus Officinalis L. (rosemary) is a medicinal plant that has been highlighted in aromatherapy research, because the studies obtained demonstrate that the use to Rosmarinus Officinalis L. essential oil (rosemary essential oil) is one of the promising non-pharmacological therapies for cognition. The aim of this systematic review was to verify the effect of rosemary essential oil on human cognition according to the PRISMA model. The systematic review protocol number was registered in Prospero (CRD42021256471). Quantitative articles with different designs that assess the outcomes of the rosemary essential oil on cognition were selected. The main exclusion criteria were (a) qualitative studies (b) studies with animal models, (c) use of rosemary tablets (Mg) and/or (d) in combination with other essential oils. Thus, two researchers independently performed a literature search in the MEDLINE/PubMed, LILACS, Scopus, Web of Science, ScienceDirect, PsycINFO, Embase and Gray Literature (Google Scholar) databases. In the initial phase of article selection, the researchers independently checked only the titles and abstracts of the articles. At this stage of the systematic review, the Rayyan was used. After this step, the full reading of the articles was done to examine when they really met the inclusion criteria. Data from the selected articles were extracted by the two researchers from a standardized table containing the variables of interest: Authors/year of publication, study design, sample, amount of essential oil (drops or mL), duration of vaporization, time of exhibition, tool used to evaluate the result of the rosemary essential oil, results and conclusion. Subsequently, the researchers assessed the methodological quality of the articles using the Effective Public Health Project Practice Quality Assessment Tool. Initially, 2,581 articles were identified in the searched databases. 15 articles met the inclusion criteria (two duplicates) and were eligible for full text reading and analysis. Of the 15 articles, 9 were included in the systematic review. Studies were grouped according to cognitive domains (long-term memory or attention and working memory). 4 studies investigated the effect of rosemary essential oil on memory, among them, 2 investigated rosemary essential oil in adults and 1 investigated in the elderly and 7 studies investigated the effect of rosemary essential oil on attention and working memory (2 used a sample of adults, 2 studies were with adolescents, 1 was with children and 2 were with the elderly). The studies selected based on the inclusion criteria of this systematic review demonstrated the significant results of rosemary essential oil in the cognition of children, adolescents, adults and the elderly. The main limitations of this systematic review were the methodological differences between the studies, in addition, studies in this area generally focus more on the investigation of episodic memory and working memory. Another limitation is that the studies were classified as having poor and moderate methodological quality. Editor: Universidade Federal da Paraíba Tipo: Dissertação

Desempenho de funções executivas em adolescentes que cometem autolesão não suicida

2026-01-16T06:05:08Z

Título: Desempenho de funções executivas em adolescentes que cometem autolesão não suicida Autor(es): Guedes, Mahyne Cleia Albino Orientador: Minervino, Carla Alexandra da Silva Moita Abstract: Adolescence is a transitional period marked by puberty and the maturation of cognitive control, driven by the development of the prefrontal cortex and its connections. This process directly influences executive functions, which are essential for emotional regulation, planning, and impulse control. Changes in these functions can increase vulnerability to risky decision-making, contributing to risky behaviors such as non-suicidal self-harm (NSS). NSS is more prevalent in adolescence and has been associated with the prediction of future suicide attempts, one of the leading causes of death among adolescents worldwide. Given this scenario, the present study aimed to analyze the performance of executive functions in adolescents involved in non-suicidal self-harm. The sample consisted of 144 adolescents (72 from the self-harm group and 72 from the comparison group), aged between 14 and 17 years. The following instruments were used in this study: sociodemographic questionnaire, Five Digit Span Test (FDT), Digit Span, Adult Executive Functioning Inventory (ADEXI) (self-report and informed versions), Positive and Negative Affect Scale (PANAS), Emotion Regulation Questionnaire (ERQ), Depression Anxiety and Stress Scale (DASS-21) and Functional Self-Harm Scale (FASM). These instruments seek to access the three subcomponents of executive functioning — working memory, cognitive flexibility and inhibitory control —, affective states, emotion regulation strategies, stress, anxiety and depression scores, as well as data on NSSI behaviors. Parametric data were analyzed by Student's t-test and nonparametric data by the Mann-Whitney test. The results were analyzed with a 95% confidence interval and indicated statistically significant differences only in self-reported working memory (p < 0,05), positive affect (p < 0,05), negative affect (p < 0,05) and stress, anxiety and depression (p < 0.001). The results suggest that there is no direct relationship between ALNS and deficits in executive functioning in adolescents who practice these behaviors. On the other hand, affective states seem to be better related to this behavior. Editor: Universidade Federal da Paraíba Tipo: Dissertação