Mask assembly with integrated sensors

A mask assembly adapted to be worn by a wearer for treatment of a medical condition, comprising:

• a mask shaped to fit over at least the nose of the wearer, the mask including a gas inlet for providing pressurized gas to the wearer;
• a harness assembly attached to the mask, the harness assembly including a plurality of straps for securing the mask assembly to the head of the wearer;
• and
• a plurality of electrodes located on the inside of at least one of the mask and the harness assembly and being spaced with regards to one another for sensing physiological information including at least one of the EEG, EMG and EOG of the wearer whereby the physiological information is used to monitor the efficacy of treatment or to vary operational parameters of the treatment, wherein the sensors include a first electrode for positioning adjacent a nasion area of the head of the wearer, a second electrode for positioning at a first forehead area of the wearer, and a third electrode for positioning at a second forehead area laterally separated from the first forehead area.

A mask assembly for wearing by a wearer during treatment of a medical condition, the mask assembly comprising:

• a nasal interface for providing pressurized gas to the wearer, the nasal interface comprising a gas inlet for receiving a source of gas and a gas outlet for providing gas directly to the nares of the wearer;
• at least one strap connected to the nasal interface for securing the mask assembly to the head of the wearer;
• and
• a forehead member for location on a forehead of the wearer, the forehead member comprising sensors for measuring physiological signals of the wearer during treatment of the medical condition, wherein the sensors include a first electrode for positioning adjacent a nasion area of the head of the wearer, a second electrode for positioning at a first forehead area of the wearer, and a third electrode for positioning at a second forehead area laterally separated from the first forehead area.

An electrode placement assembly for locating electrodes on a forehead of a wearer of the electrode placement assembly, comprising:

• a forehead placement assembly dimensioned to extend laterally across the forehead of the wearer and having a lower portion for at least partly overlying a nasion area of the wearer;
• at least one strap connected to the forehead placement assembly for securing the electrode placement assembly to the wearer;
• and
• a plurality of electrodes positioned on at least one of the forehead placement assembly and the at least one strap so that the plurality of electrodes contact the skin of the wearer, wherein the sensors include a first electrode for positioning adjacent a nasion area of the head of the wearer, a second electrode for positioning at a first forehead area of the wearer, and a third electrode for positioning at a second forehead area laterally separated from the first forehead area.