Aspect Medical to Webcast Presentation at Friedman Billings Ramsey 9th Annual Growth Conference on June 2, 2005.

NEWTON, Mass. -- Aspect Medical Systems, Inc. (Nasdaq: ASPM) will be presenting at the Friedman Billings Ramsey 9th Annual Growth Conference in New York on June 2, 2005, at 2:50pm EDT. The presentation will be made by Michael Falvey, Chief Financial Officer. The presentation will be conducted live via webcast and may be accessed at www.aspectmedical.com on the Investor page or at http://ccbn.com. An archived version will be available from June 2, 2005 through June 9, 2005

About the Company

Aspect Medical Systems, Inc. (Nasdaq: ASPM) is a global market leader in brain monitoring technology. Aspect's BIS technology directly measures the effects of anesthetics and sedatives on the brain. To date, BIS technology has been used to assess more than 11.3 million patients and has been the subject of approximately 1,800 published articles and abstracts. BIS technology is installed in approximately 38 percent of all domestic operating rooms and is available in more than 160 countries. Aspect has OEM agreements with seven leading manufacturers of patient monitoring systems. The Company is also investigating how other methods of analyzing brain waves may aid in the diagnosis and management of neurological diseases, including depression and Alzheimer's disease. For more information, visit Aspect's web site at http://www.aspectmedical.com.