Search

The study investigated the cortical activity changes and time production task performance induced by changes in motion speed of a non-immersive 3D virtual stimulus.Twenty-one individuals were participated in the crossover study with the visual-time reproduction task under three-speed conditions: original, slow and fast virtual stimulus. In addition, the electroencephalographic analysis of the theta band power in the dorsolateral prefrontal cortex was done simultaneously with time production task execution.The results demonstrated that in the slow speed condition, there is an increase in the error in the time production task after virtual reality (We propose that the modulations of speed of virtual stimulus may underlie the accumulation of temporal pulses, which could be responsible for changes in the performance of the production task of the time intervals and a substantial increase in right dorsolateral prefrontal cortex activity related to attention and memory, acting in cognitive domains of supraseconds.

Introdução: O equilí­brio corporal pode ser afetado por déficits visuais, proprioceptivos e/ou vestibulares centrais ou periféricas. Dentre as afecções vestibulares periféricos, a Vertigem Postural Paroxí­stica Benigna apresenta grande interesse em pesquisas que buscam responder suas apresentações clí­nicas em adultos e sua associação com a integralidade dos demais sistemas corporais. Objetivo: Analisar as respostas de adultos jovens assintomáticos submetidos í semiologia do sistema vestibular. Metodologia: Estudo quantitativo, transversal analí­tico e descritivo, onde foram utilizados os testes de equilí­brio estático, dinâmico e a manobra de Dix-Hallpike, com amostra de 30 voluntários assintomáticos recrutados em uma instituição de ensino superior do municí­pio de Parnaí­ba/PI. Resultados: O teste de apoio unipodal (1,87 ± 0,346) foi negativo (p < 0,001) e no teste de Fukuda (1,20 ± 0,407) grande parte tiveram resultados positivos (p < 0,001). Os testes de Romberg (2,00 ± 0,000), Romberg-Barré (1,50 ± 0,509) e Babinski-Weil (1,37 ± 0,490) não foram significantes (p = 0,001). Para a Manobra de Dix-Hallpike observamos que os movimentos de sedestação para decúbito dorsal esquerdo e de decúbito dorsal para sedestação direito e esquerdo foram significativos (p < 0,001). Conclusão: Os adultos jovens assintomáticos podem apresentar resultados positivos em teste de equilí­brio e sintomas na manobra de Dix-Hallpike, confirmando a Vertigem Postural Paroxí­stica Benigna.Palavras-chave: doenças vestibulares, equilí­brio postural, testes de função vestibular.

Summary: Healthcare-associated infections (HAIs) are among the most common adverse events in hospitals. We used artificial intelligence (AI) algorithms for infection surveillance in a cohort study. The model correctly detected 67 out of 73 patients with HAIs. The final model used a multilayer perceptron neural network achieving an area under receiver operating curve (AUROC) of 90.27%; specificity of 78.86%; sensitivity of 88.57%. Respiratory infections had the best results (AUROC ≥93.47%). The AI algorithm could identify most HAIs. AI is a feasible method for HAI surveillance, has the potential to save time, promote accurate hospital-wide surveillance, and improve infection prevention performance.

[Purpose] This study analyzed the acute effects of infrared and neural mobilization on the median nerve on the range of elbow extension of the dominant limb. [Subjects and Methods] Forty participants from university, neurologically asymptomatic, 12 males and 28 females (22.8 ± 1.9 years), were randomly divided into four groups: Group 1 (control) rested for 25 minutes in the supine position; Group 2 received the specific neural mobilization for the median nerve; Group 3 received an application of infrared for 15 minutes on the forearm; Group 4 received the same application of infrared followed by neural mobilization. The goniometric parameters of elbow extension were evaluated after the intervention. [Results] Significant differences of extension value were observed between Group 1 and Group 3 (15.75 degrees), and between Group 1 and Group 4 (14.60 degrees), and the average higher in Group 3 (26.35 degrees). [Conclusion] This research provides new experimental evidence that NM in relation to superficial heat produces an immediate effect on elbow range of motion versus NM isolated.

Aging is characterized by gradual physiological changes in body systems. Changes in the vestibular system can occur and cause dizziness, vertigo and imbalance, symptoms that are common in the elderly. Vestibular rehabilitation is a therapeutic resource that has been widely used to improve this condition. To complete a systematic review of the effects of vestibular rehabilitation on the elderly. A search for relevant publications was conducted in SCIELO, PUBMED, MEDLINE, COCHRANE and LILACS databases. Clinical trials and cohort studies that were written in the English language and published over the course of the last 10 years were selected. The methodological quality of the studies was assessed using the PEDro scale. A critical analysis of the studies was composed. Eight studies that involved subjects who were over the age of 60 were selected for inclusion in the systematic review. The most common vestibular dysfunction identified was complaints about dizziness and imbalance. The Dizziness Handicap Inventory was the most frequently used assessment instrument, and the treatment protocol that prevailed was that suggested by Cawthorne and Cooksey. The PEDro scale showed that only one article was of an acceptable methodological quality and presented satisfactory outcome measures. This was due, in part, to a lack of a hidden randomization, masking of the subject, evaluators and therapists, and lack of outcome measures, which can reduce the quality of the evidence presented in this study. Clinical trials indicate that vestibular rehabilitation represents an effective means of treating elderly patients with vestibular disorders; however, evidence of its effectiveness remains lacking.