TOKYO, JAPAN, September 21, 2023—NTT Communications Corporation (NTT Com), the ICT solutions and international communications business within the NTT group, announced today that it has launched a trial of "Brain Health Check Plus”, a dial-up navigation service that uses AI functionality to detect early signs of cognitive decline. The trial of the service, for which a charge will be made, commenced on September 21, 2023, coinciding with World Alzheimer's Day. The concept behind this initiative is to help create a society where fewer individuals, families and companies experience the anxiety or inconvenience dementia can cause.