Programa de pós-graduação em Ciências da Reabilitação
Permanent URI for this communityhttps://repositorio.ufrn.br/handle/123456789/24718
Browse
1 results
Search Results
Master Thesis Percepção biológica do movimento humano em indivíduos após acidente vascular cerebral(Universidade Federal do Rio Grande do Norte, 2022-12-19) Oliveira, Marcella Cabral de; Cacho, Enio Walker Azevedo; http://lattes.cnpq.br/7371695127039138; http://lattes.cnpq.br/9980035687038572; Souza, Luciane Aparecida Pascucci Sande de; Cacho, Roberta de OliveiraIntroduction: To study the perception of biological movement (BM), a method known as point-of-light animation has been used, which preserves the kinematic characteristics of human movement and provides adequate information for movement recognition. Several studies describe systems and databases that propose to verify this ability in young adults, but there is a lack of analyzes in individuals with neurological injuries and the elderly. Objectives: Article 1 - To develop and test the usability of a system for analyzing the perception of BM in healthy elderly patients and Article 2 - To assess whether post-stroke individuals have impaired biological perception of movement. Material and Methods: Article 1 is a pilot study and Article 2 is a cross-sectional, quantitative experimental study with post-stroke patients and healthy elderly subjects submitted to the task of biological perception of human movement. The task consisted of presenting stimuli from points-of-light of natural and unnatural forms of human beings, male and female, of thirteen movements: march, lateral march, high jump, long jump, sit and stand, pedaling, kicking, playing ball, picking up an object on the floor, sweeping, bringing a bottle of water to your mouth, waving and greeting between two people. To analyze the participants' perception, for each of the experimental conditions, we calculated the correct and incorrect rates of each participant, in addition to the response time and the number of correct verbal responses by the participants for the natural movements. Results: In Article 1, the system was developed to allow data acquisition, capture and processing of outcome variables. In addition, it was built to be easily used by the therapist in a clinical environment and capable of producing feedback on the individual's perception of BM. At the end of the experiment, the system provides a report with information regarding the characterization of the user, added to the generated variables. In Article 2, the control group showed an increase in the total number of correct answers in the tasks, although there was no difference between the groups (p = 0.1620). Mean response time was different between groups in the following tasks: waving (p = 0.0022), gait (anterior posterior p = 0.0006; lateral p = 0.0376), kicking (p = 0.0284), picking up an object from the floor (p = 0.0284), sitting down and getting up (p = 0.0452), pedaling (p = 0.0233) and sweeping (p = 0.0257). This impaired perception was more evident for tasks involving objects and may be related to the severity of sensorimotor impairment in these individuals. Conclusion: The developed system met the expected objectives, being low cost, easy and quick to apply, and can be used to assess the perception of BM. In addition, poststroke patients presented a perception of impaired BM compared to healthy elderly. Therefore, the implementation of point-of-light stimuli to analyze BM perception can be useful in the area of neurological rehabilitation, in order to minimize difficulties in interpersonal communication and in the social functioning of these individuals.