1,720,968 research outputs found
Has music a specific effect on temporal control of movements? An auditory-motor task of synchronization.
No full textThe timing of action is analyzed by studying a repetitive task in which participants are required to execute simple isochronous repetitive movements (IRMs) avoiding prerequisites for explicit temporal representation. Movements are performed in free condition and accompanying predictable time-based auditory stimuli such as metronome clicks and robustly timed musical excerpts
Event Related Biometrics: Towards an Unobtrusive Sensing Seat System for Continuous Human Authentication
No full textThe present work is focused on the improvement of a Sensing Seat system previously developed by the authors for the initial authentication purpose in office and car scenarios. The goal is to obtain an event-related continuous authentication system, where the human subject should not take care of the system itself so that he is free to perform his normal actions. The system is realized by means of a sensing cover where conductive elastomers are used as strain sensors. The deformation of the cover caused by the body shape while actions are performed by the subject are used to obtain time-dependent relevant features. Such information are then analyzed by suitable classifiers that are able to perform the real-time continuous authentication task. A measurement campaign was carried out using data from 24 human subjects employed in an office scenario while a set of 22 actions were performed. The authentication capabilities of the system are reported in terms of acceptance and rejection rates, showing a high degree of correct classification
Music and non-musical timed information affect accuracy of motor performance in a task of synchronization
No full textModulation of isochronous movements in a flexible environment: links between motion and auditory experience
No full textThe ability to perform isochronous movements while listening to a rhythmic auditory stimulus requires a flexible process that integrates timing information with movement. Here, we explored how non-temporal and temporal characteristics of an auditory stimulus (presence, interval occupancy, and tempo) affect motor performance. These characteristics were chosen on the basis of their ability to modulate the precision and accuracy of synchronized movements. Subjects have participated in sessions in which they performed sets of repeated isochronous wrist’s flexion–extensions under various conditions. The conditions were chosen on the basis of the defined characteristics. Kinematic parameters were evaluated during each session, and temporal parameters were analyzed. In order to study the effects of the auditory stimulus, we have minimized all other sensory information that could interfere with its perception or affect the performance of repeated isochronous movements. The present study shows that the distinct characteristics of an auditory stimulus significantly influence isochronous movements by altering their duration. Results provide evidence for an adaptable control of timing in the audio–motor coupling for isochronous movements. This flexibility would make plausible the use of different encoding strategies to adapt audio–motor coupling for specific tasks
The influence of audio-stimuli on isochronic repetitive movements. A time analysis using kinematic data
No full textGait and Anthropometric Profile Biometrics: A Step Forward
No full textEmerging biometrics based on the measurements of body dynamic and static characteristics have gained increased importance in all the surveillance environments where the security is a mandatory priority. Some technology branches are involved to find unobtrusive solutions for authentication systems, where the human subject should not take care of the system itself so that he/she is free to perform his/her normal actions. In the first part of the chapter a novel gait recognition system is presented that introduces the use of range data for gait signal analysis. In the second part of the chapter, a description of system based on a sensing seat for event-related continuous authentication purpose in office and car scenarios is presented. Both biometric technologies introduce new means of verifying the user identity, by exploiting the analysis of common and every-day activities recorded in an unobtrusive manner and their recognition accuracy has been seen to be very high in the performed experiments
Sensing garments for body posture and gesture classification [Vêtements instrumentés pour une classification des postures et des gestes du corps]
No full textA number of sensing garments are designed through the integration of conductive elastomer (CE) sensors into elastic fabrics without changing the substrate mechanical properties. The sensing garments, which are portable and easily usable in non-structured environments, are designed to improve motion detection, posture, and movement of human body and provide good comfort to the user. WACKER Ltd., has introduced the Elastosil® LR 3162 A/B Liquid Silicone Rubbers (LSR), which guarantee non-toxicity after vulcanization, and can be used in medical and pharmaceutical applications. The technology allows to associate the sensor status to parameters related to user movements in terms of signal elaboration and data interpretation, and to extract several parameters from the sensing garment, depending on the quality of the information needed. The improved performance of movement reconstruction also allows the use of these devices in rehabilitation, sports, and multimedia fields
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