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Effective Nov. 1, 2023, clients and families, visitors, vendors and staff are required to wear a mask while moving throughout the hospital, including while in elevators, in spaces where clients receive care or participate in research. A medical grade mask will be available upon entry.



Visualizing emotional arousal to empower self-awareness and wellness.

Introducing holly™

holly™ is an app that uses measurements of an individual's heart rate to provide information about the user’s emotional arousal level. The information provided by holly™ can help empower greater awareness and wellness, but holly™ is not meant to be a diagnostic tool or a tool to direct intervention and clinical decision making.

holly™ was developed by scientists Drs. Azadeh Kushki (seen here on the right) and Evdokia Anagnostou.

How it works

holly™ uses a patented software algorithm to processes an individual's heart rate (collected through wearable sensors such as smart watches and fitness trackers) and other contextual data to identify moments of emotional arousal in near-real time. The information is then converted to a visual representation of the user’s emotional level on a mobile app that is displayed to the child and/or caregiver.

holly™ provides individuals with the tools to increase awareness of emotional states, and can be employed by children, youth, and adults.


Holland Bloorview is grateful to the following key partners for their financial and resource support: Ontario Brain Institute (OBI), POND network, TD Bank Group (TD), Kids Brain Health Network (KBHN), Toronto Innovation Acceleration Partners (TIAP), Samsung Canada, and the Canadian Institutes for Health Research (CIHR)



We welcome potential partnership and licensing inquiries.

Complete this form if you would like to explore potential partnership, licensing opportunities or if you would like to receive updates about holly™.