Encontrados 13 documentos, a visualizar página 1 de 2
Vibration perception threshold assessments: Comparing the Staircase and von Bék...
Silva, Emanuel Teixeira; Costa, Nélson Bruno Martins Marques da; Lisboa, Maria Isabel Almeida Costa PintoVibration perception thresholds (VPTs) are used in fields like health, work, and traffic safety. To assess them, international standards recommend two psychophysical methodologies: the von Békésy method, or variants of the up and down algorithm, for example, the Staircase method. However, their impact on the results of threshold measurement has not been explored much, including on assessments at frequencies > 2...
How to determine hands’ vibration perception thresholds – a systematic review
Silva, Emanuel Teixeira; Lisboa, Maria Isabel Almeida Costa Pinto; Costa, Nélson Bruno Martins Marques daThe vibration perception threshold (VPT) is the minimum amplitude required for conscious vibration perception. VPT assessments are essential in medical diagnostics, safety, and human–machine interaction technologies. However, factors like age, health conditions, and external variables affect VPTs. Various methodologies and distinct procedures have been used to access VPTs, leading to challenges in establishing ...
Capturing mental workload through physiological sensors in human-robot collabor...
Pereira, Eduarda Manuel Barros; Guachamin, Luis Francisco Sigcha; Silva, Emanuel Teixeira; Sampaio, Adriana; Costa, Nuno Miguel CerqueiraHuman–robot collaboration (HRC) is increasingly prevalent across various industries, promising to boost productivity, efficiency, and safety. As robotics technology advances and takes on more complex tasks traditionally performed by humans, the nature of work and the demands on workers are evolving. This shift emphasizes the need to critically integrate human factors into these interactions, as the effectivenes...
Hand vibration threshold mapper (HaViThreMa): A haptic vibration system
Silva, Emanuel Teixeira; Lisboa, Isabel C.; Matias, Tiago; Gomes, Rui; Carvalho, Adriano Dídimo Machado; Cardoso, PauloThis paper describes the design aspects of a system created to assess vibration perception thresholds (VPT). i.e., the minimum thresholds of mechanical vibration that humans can perceive on their hands. The system can carry out these assessments on various areas of the hand, such as the fingertips and the palm, and assessments are conducted according to pre-established psychophysical protocols. The technical sp...
Hand’s vibration perception thresholds: a systematic review
Silva, Emanuel Teixeira; Lisboa, Maria Isabel Almeida Costa Pinto; Costa, Nélson Bruno Martins Marques daThe term vibration perception threshold (VPT) refers to the minimum amplitude required for a vibration to be consciously perceived. Knowledge of VPTs can be used to aid in the diagnosis of various pathologies, or to support design decisions during human-machine interface development. However, several factors affect VPT measurements (e.g., contactor size and pressure), thus, comparing VPT results from multiple s...
Minimum hand haptic perception thresholds
Silva, Emanuel Teixeira; Grilo, José Luís Coelho Ferreira; Matias, Tiago; Gomes, Rui; Carvalho, Adriano Dídimo Machado; Cardoso, PauloThis paper is a short review of the recent state of the art relating to the study of vibration perception thresholds (VPT), sensed by the fingertip(s) of the human hand. To this end, papers regarding the topic of assessing VPT, released between 2011 and 2021, were collected and reviewed. Focus was given regarding the experimental set-ups, particularly the choice of algorithms and instruments used, the choice of...
Vibration perception thresholds on the five fingers of the human right hand amo...
Silva, Emanuel Teixeira; Sampaio, Rosane Schonblum; Teixeira, Lisandra Maria Araújo; Costa, Nélson Bruno Martins Marques daThe goal of the present study was to assess vibration perception thresholds (VPT) for frequencies of 65, 300, and 500 Hz, at the finger pads of the five fingers of the human right hand, while also assessing potential differences between the fingers, and potential effects of the use of two similar psychophysical methods to measure VPT. A novel instrument, the Hand Vibration Threshold Mapper, was used in this stu...
Efeito do ruído de tráfego na decisão de atravessamento dos peões
Soares, Francisco Emanuel Cunha; Silva, Emanuel Teixeira; Pereira, Frederico; Silva, Carlos; Sousa, Emanuel Augusto Freitas; Freitas, E. F.Para atravessar uma rua, os peões devem detetar o tráfego, combinar dados provenientes de diferentes fontes, auditivas e visuais, avaliar o tempo para atravessar com segurança e monitorizar a posição dos veículos que se aproximam. Este trabalho teve como objetivo avaliar a influência do ruído emitido pelos veículos na tomada de decisão de atravessamento dos peões. Realizou-se uma experiência em ambiente virtual...
Analysis of pedestrian-vehicle crossing interaction
Soares, Francisco Emanuel Cunha; Silva, Emanuel Teixeira; Freitas, E. F.A big focus has been given to soft modes of transportation. In this way, it is necessary to create the best safety conditions for those who are the most vulnerable users of the road network, with the greatest emphasis to pedestrians. The main goal of this work is to identify the factors which contribute to risk-taking behavior by these road users, by analyzing pedestrian’s crossing behavior using data collected...
Factores com influência na interação entre peões e veículos em passagens para p...
Soares, Francisco Emanuel Cunha; Marcomini, Leandro Arab; Acela, Leidy Marcela Baron; Silva, Emanuel Teixeira; Freitas, E. F.; Santos, Jorge A.Analisar os comportamentos dos peões em passagens para peões e saber o que os pode influenciar é um passo essencial para a melhoria das condições de segurança rodoviária. Este trabalho consiste numa primeira abordagem à identificação de fatores com impacto no comportamento de peões em situação de atravessamento e baseia-se na análise da influência de variáveis relacionadas com características da infraestrutura ...