What are sleep and alertness models?

They are mathematical models, typically a set of differential equations, that capture the dynamics of the neurological and other biological processes that govern sleep-wake and alertness in humans. The models can be evaluated in the context of complex schedules and lighting conditions.

What can I do with them?

The predictions of biological need for sleep and levels of alertness in the context of work and social time commitments and specific lighting conditions

What is this website?

This website provides supporting information and documentation for using the web-application or API, also hosted on this domain, to access predictions generated by the sleep and alertness models.

What is the API?

The API (Application Programming Interface) provides an interface suitable for scripted or other automated access to the prediction and recommendations of the models of sleep and alertness dynamics that we have developed and implemented.

What models are available?

The primary models are those developed by ... at the University of Sydney. Additionally a number of models from the literature are implemented for reference. The models that are available are summarised in the documentation, including links to their associated peer reviewed publications.

How have the models been validated?

The models provided by this web-interface are the subject of peer reviewed publications, both detailing the models themselves and comparing their predictions against laboratory and real-world data.

How do I get access?

Currently, requests for access should be sent by email and are granted on a case by case basis. See the Contacts section below.


Visit The University of Sydney Web-Site
Visit The CRC for Alertness Safety and Productivity Web-Site


  • Functionality of the models, and API access: Svetlana Postnova
  • Use and implementation of the models and API: Stuart Knock (@sydney.edu.au)