Digital tool for self-assessment of brain health in Japan


In August 2019 Cogstate and pharmaceutical company Eisai Co. Ltd established a partnership to develop and commercialise digital brain performance assessment tools in Japan.

The first product launched under this collaboration is “NouKNOW™,” a digital tool for self-assessment of brain performance based on the cognitive tests in the Cogstate Brief Battery™.

As part of this partnership, Cogstate is proud to be a strategic investment of Eisai Innovation, which focuses on neurology and oncology digital solutions and diagnostics to advance human health care (hhc).

Read about the Partnership

Know your Brain with NouKNOW

Directly translated, NouKNOW means “know your brain”, a fitting name for a solution aimed at expanding awareness and understanding of the importance of brain health among individuals in Japan. NouKNOW utilizes the Cogstate Brief Battery—the same assessments included in Cognigram™—to deliver an easy to understand brain health score coupled with science-based lifestyle advice that encourages individuals to make healthy changes.

Participants take four card tests on a PC or tablet device

The tests are easy to complete and take only 15 minutes

Measures include psychomotor function, attention, learning and memory

Self-assessments are designed to be done regularly in daily life and during health checkups

Brain Performance Score and Healthy Living Tips

NouKNOW provides an easy-to-understand score, or brain performance index (BPI), which represents a measurement of performance for several critical aspects of thinking. Following the self-assessment, NouKNOW provides science based practical tips for maintaining brain performance – as research shows that decline in brain health may be mitigated by embracing a healthy lifestyle.

Availability and Access

Currently NouKNOW is available to individuals in Japan via municipalities providing health services to local residents and corporations providing health check services for employees and customers.


The brain performance app “Easiit App”

NouKNOW is also available via Eisai’s Easiit app, a digital health application available direct to consumers.

In the Easiit App, a menu of individualised recommendations based on users’ footsteps, diet, sleep, and weight records (lifelog) is updated on a weekly basis and displayed. Individualised scoring is conducted based on actions and habits which are good for brain performance. The Easiit App confirms score changes and breakdown, and encourages formation of good habits for brain performance moving forward. For diet record in particular, easy diet management is made possible as the Easiit App evaluates users’ meals via photo upload for calorie intake and eleven essential nutrients, and displays this information in relation to an age-based standard for calorie and nutrient intake. Additionally, with every use of the app one can collect Easiit miles, which can be exchanged for prizes such as gift cards. Through connection to wearables and subsequent functions such as sleep time tracking, the Easiit App can encourage the creation of good habits for brain performance.

All of the functions within the Easiit App are designed, developed, and operated on a framework for protection of individual information.

Visit the Easiit website

Cogstate Brief Battery™

NouKNOW is powered by the Cogstate Brief Battery, which has been used in over 1,000 research studies around the world and cited in hundreds of peer-reviewed journal publications.

This battery consists of four tests, where a single playing card stimulus is presented in the center of the device screen. By simply asking different “yes” or “no” questions about the playing cards, the tests assess various aspects of thinking that are important for cognitive functioning.

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