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Infrared Photography
Published in Adrian Davies, Digital Ultraviolet and Infrared Photography, 2017
The cameras are triggered by movement detected by the PIR (passive infrared) sensor. Some models have a facility for monitoring the ambient temperature and automatically adjusting the sensor to be more sensitive on hot days and less sensitive on cold days. Different cameras will have different detection areas, both in terms of distance and angle of view.
Using Technology to Overcome Impairments of Mental Functions
Published in Barbara A. Wilson, Jill Winegardner, Caroline M. van Heugten, Tamara Ownsworth, Neuropsychological Rehabilitation, 2017
Brian O'Neill, Matthew Jamieson, Rachel Goodwin
Within-building disorientation to place and time can be distressing. Brown et al. (2013) explored the use of a Wander-Reminder with a man with a history of right intracerebral haemorrhage who was frequently distressed when wandering at night. The device consisted of a passive infrared sensor with timed playback of recorded messages, which, if triggered between midnight and 7am, played a recording which addressed the man by name, reminded him that it was night-time and suggested a return to bed. The frequency of nocturnal wanderings was significantly reduced (ibid.).
Assistive Technology, Disability and Rehabilitation
Published in Tom M. McMillan, Rodger Ll. Wood, Neurobehavioural Disability and Social Handicap following Traumatic Brain Injury, 2017
First, disorientation due to primary memory impairment may present as challenging behaviour. Brown and colleagues (2012) reported a single case of a man who was frequently verbally aggressive following an intracerebral haemorrhage. His disorientation to place and time led to nocturnal wandering and aggression when redirected by care staff. To reduce interpersonal triggers to aggression, orientation information was provided using a location triggered auditory prompter known as a Wander Reminder (Designability, 2015). The system uses a passive infrared sensor and incorporates the timed playback of recorded messages. If triggered between midnight and 7a.m., the system plays a recording which addressed the man by name, reminded him that it was the middle of the night and suggested that he return to bed. The frequency of nocturnal wanderings and, thereby of challenging behaviour, was significantly reduced and was maintained after the movement-triggered prompter was withdrawn (Brown et al., 2012). Further investigations using such technology to reduce distress and challenge are indicated.
Dissociation of circadian activity and singing behavior from gene expression rhythms in the hypothalamus, song control nuclei and cerebellum in diurnal zebra finches
Published in Chronobiology International, 2019
Abhilash Prabhat, Neelu Anand Jha, S. K. Tahajjul Taufique, Vinod Kumar
We monitored continuously 24 h activity-rest pattern by a passive infrared sensor (DSC, LC100 PI Digital PIR motion detector, LC-100-PI) mounted on each cage, which detected general movement of the bird in its cage. The activity counts collected in 5-min bins were stored in the computerized data quest system. The collection, graphics and analysis of activity were done using the ‘The Chronobiology Kit’ software program from Stanford Software Systems (Stanford, USA), as described in previous publications on zebra finches from our laboratory (Jha and Kumar 2017a, 2017b). Double-plotted activity records were graphed and presented as actograms wherein successive days were plotted sideways and underneath to show better visual illustration of the 24 h pattern and the timing of activity and rest of each individual. We extracted activity records collected in 10 min bins for 7 days for each bird for further analysis. The average activity in 10-min bins over successive 7 days was plotted to show 24 h profile of each bird.