Table 3.

Ambient mental health monitoring research prototypes.

Reference	Sensors/parameters	Application
Ramón-Fernández et al. (46), Alicante, Spain, 2018	Level of noise in the room, flow of people moving through it, temperature, luminosity, and air quality	Stress detection
Kim et al. (47), Michigan, USA, 2017	Passive infrared motion sensors	Depression monitoring
Dawadi et al. (48), Washington, USA, 2013	Motion sensors on the ceiling, door sensors on cabinets and doors, and item sensors on selected	Cognitive assessment
Alam et al. (49), Yongin, Korea, 2016	Web of objects system comprising a smart home environment and lightweight biosensors	Psychiatric emergency
Hayes et al. (50), Oregon, USA, 2009	Measures of walking speed and amount of activity in the home	Cognitive assessment
Mielke et al. (51), Braunschweig, Germany, 2020	Detection of Psychomotor agitation by collecting motion data	Mental health monitoring
Kasteren et al. (52), Amsterdam, Netherlands, 2010	Activity monitoring using wireless sensor systems	Cognitive assessment
Bradford et al. (53), Canberra, Australia, 2013	Sensor-based in-home monitoring system for the elderly	Cognitive assessment
Ribonia et al. (54), Cagliari, Italy, 2016	SmartFABER sensor network collecting behavioral anomalies in the elderly	Cognitive assessment