This paper investigates and compares the effectiveness of haptic and audio modality for navigation in low visibility environment using a sensory augmentation device. A second generation head-mounted vibrotactile interface as a sensory augmentation prototype was developed to help users to navigate in such environments. In our experiment, a subject navigates along a wall relying on the haptic or ...

In 2 experiments, a 12-min computerized vigilance task was demonstrated to reproduce the vigilance decrement, high workload (NASA-TLX), and stressful character (Dundee Stress State Questionnaire) of vigilance tasks lasting 30 min or more. In Experiment 1, the abbreviated task was also shown to duplicate the signal salience effect, a major finding associated with long-duration vigilance tasks. M...

ing transplantation with adult mouse donor splenocytes, with the donor splenocytes forming replacement islets. However, the failure of other groups to reproduce these findings has led to increased scrutiny of the role of the spleen for such a purpose. Using a chick-quail chimaera model of pancreatic organogenesis, we show that the developing avian spleen is able to differentiate into insulin-pr...

The paper is aimed at studying the perceived strain in professional air-traffic controllers both through self-evaluation and physiological indicators from the autonomic nervous system (ANS). The number of aircraft to be monitored was the main independent variable and could evolve at random within 1 and 10. Five ANS variables were recorded continuously in 25 participants while they handled real ...

Despite critical roles in development and cancer, the mechanisms that specify invasive cellular behavior are poorly understood. Through a screen of transcription factors in Caenorhabditis elegans, we identified G1 cell-cycle arrest as a precisely regulated requirement of the anchor cell (AC) invasion program. We show that the nuclear receptor nhr-67/tlx directs the AC into G1 arrest in part thr...

In this paper, we investigate interactions with distant interfaces. In particular, we focus on how to issue mouse click like commands in mid-air and we propose a taxonomy for distant one-arm clicking gestures. The gestures are divided into three main groups based on the part of the arm that is responsible for the gesture: the fingers, the hand, or the arm. We evaluated nine specific gestures in...