Abstract: Apparatus for determining respiratory information about a user, the apparatus comprising: a. a plurality of temperature sensors, each temperature sensor having a field of view, the temperature sensors being arranged to detect a temperature gradient within volume of interest and each providing an output signal; b. a support frame having a head on which said temperature sensors are mounted, the support frame and temperature sensors making no contact, in use, with the user; and c. a processor for processing one or more of said output signals to determine said respiratory information about the user.

Abstract: Embodiments of the present invention provide a ring for sensing one or more physiological and/or behavioural parameters of a user. The ring comprises an aperture for receiving a finger of the use. The aperture comprises a sensing portion, one or more sensing means disposed in the sensing portion and a resiliently deformable pad opposing the sensing portion. The resiliently deformable pad is arranged to contact a finger to pressure the finger against the one or more sensing means when the finger is received in the aperture. Aspects of the invention relate to a trigger device, to an apparatus for inducing sleep and to a kit.