BrainTalk’s algorithm is the product of a collaboration between neuropsychology experts at Israel’s National Institute for the Rehabilitation of the Brain Injured (NIRBI) and the leaders in machine learning technology at US-based predictive analytics company SentiMetrix.

Ayala is a senior neuropsychologist and certified clinical supervisor with a specialization in Rehabilitation Psychology and a PhD in Neuroscience, an MA in Neuropsychology and a dual undergraduate degree in Physics and Psychology. She has served as the CEO and Professional Director of NIRBI since March 2015. Alongside extensive professional knowledge derived from over 15 years as a clinician, Ayala brings notable leadership experience, scientific proficiency, and a multi-disciplinary background to NIRBI.

Ayala Bloch, PhD – Co-founder
Sari Maril, PhD – Co-founder

Sari is a clinical neuropsychologist with over 15 years of experience in creating, editing and managing written academic and scientific content in English. She holds PhD (2013) and MA degrees in Clinical Neuropsychology and a dual undergraduate degree in Biology and Psychology. Prior to her position as research director at NIRBI, Sari worked with several neurological and psychiatric populations in both clinical and research-based frameworks.

Vadim Kagan – Co-founder

Vadim has over 25 years of experience building massive-scale data processing systems. During his 12-year stint at AOL, Vadim worked on search engines, automated news processing, data profiling and content syndication. Since 2007, he's been leading SentiMetrix, bringing his skills and expertise to Big Data and social media analytics.

VS Subrahmanian – Co-founder

VS is well-known worldwide for his expertise in social media analysis, socio-cultural computational methods and text analytics. He is a Professor of Computer Science at the University of Maryland in College Park and the inventor of the technology behind SentiMetrix products and services.


Brain damage is not always physically visible, so it is frequently undiagnosed even when it causes major cognitive deficits. This prevents tens of millions of people living with these deficits from getting access to rehabilitation. 
Untreated brain damage from diverse sources leads to vast downstream healthcare costs. It is also closely associated with pressing economic problems like unemployment, drug use and homelessness. BrainTalk’s vision is to mitigate or prevent these issues though early detection and accurate intervention.




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 Since there is no direct cognitive testing involved – all you have to do is talk, BrainTalk is stress-free and can be repeated indefinitely with no learning effects.


BrainTalk’s patent-pending intelligent algorithm can detect cognitive deficits from diverse sources: for example, stroke, aging, disease, and even medical interventions like chemotherapy.

Repeat as needed
 Multiple conditions

BrainTalk can be used to screen for cognitive deficits following known or suspected damage. It is also ideal for passively monitoring cognitive state in people under continual risk, like athletes and senior adults.

Passive monitoring


BrainTalk is an advanced software solution that detects cognitive deficits quickly and accurately based on a five-minute speech sample.
It is designed to give health and sports organizations a non-invasive, cost-effective and repeatable tool to screen and monitor large populations with known or suspected brain damage.