OBJECTIVE Covert aspects of ongoing user mental states provide key context information for user-aware human computer interactions. In this paper, we focus on the problem of estimating the vigilance of users using EEG and EOG signals. APPROACH The PERCLOS index as vigilance annotation is obtained from eye tracking glasses. To improve the feasibility and wearability of vigilance estimation devi...

BACKGROUND Quantifying vigilance and exploring the underlying mechanisms has been the subject of numerous studies. Less attention has focused on the complex interplay between contributing factors such as reproductive status, social rank, sex and group size. Reproductive status and social rank are of particular interest due to their association with mating behavior. Mating activities in rutting ...

This research uses a task disengagement framework to examine how CCTV surveillance operators and novices respond to the vigilance demands of the detection process. Vigilance tasks are acknowledged as being high in mental workload, yet little is known about how operators deal with these demands in jobs where successful performance is reliant upon sustaining attention on a daily basis. Much vigil...

Vigilance and avoidance of threat are observed in anxious adults during laboratory tasks, and are posited to have real-world clinical relevance, but data are mixed in anxious youth. We propose that vigilance-avoidance patterns will become evident in anxious youth through a focus on individual differences and real-world strategic avoidance. Decreased functional connectivity between the amygdala ...

Vigilance refers to the readiness to respond to a stimulus. It requires observer to maintain and remain alert to specified stimuli for prolonged periods of time. This study was designed to investigate differences if any, in performance on vigilance task in children across different age groups and gender in the Indian context. Forty healthy children from four age groups (3-5; 5-7; 7-9; 9-11 year...

It is generally assumed that an individual of a prey species can benefit from an increase in the number of its group's members by reducing its own investment in vigilance. But what behaviour should group members adopt in relation to both the risk of being preyed upon and the individual investment in vigilance? Most models assume that individuals scan independently of one another. It is generall...

Early life adversity (ELA) can lead to poor health later in life. However, there is significant variation in outcomes, with some individuals displaying resilience even in the face of adversity. Using longitudinal data collected from free-ranging rhesus macaques between birth and 3 years, we examined whether individual variation in vigilance for threat, an early emerging attentional bias, can ac...

The variety of meanings nowadays attached to the notion of "vigilance" essentially conceals H. Head's object in view when introducing the term more than half a century ago. It may be supposed that a major reason for the existing confusion is that Head failed to distinguish explicitly between "vigilance" as a force, i.e., a reorganizing power ("vital activity") on the one hand and as a system's ...

Adult ADHD and vigilance – a case study based on pupillometry. In this case study based on pupillometry the administration of atomoxetine was shown to induce a stabilization in a criminally responsible mentally disordered offender diagnosed with attention deficit hyperactivity disorder (ADHD). As a relatively consistent pupillometric diameter over a period of 9 minutes indicates a relatively st...

One of the greatest challenges facing military personnel deployed to combat zones is the threat of improvised explosive devices (IEDs). In spite of advances in IED detection technology, one of the best defenses against IEDs is the vigilant Soldier. The present study compares the vigilance performance of those who were provided knowledge of results (KR) during vigilance training, to those who di...