Aspect Medical Systems Provides Anesthesia Awareness Patient and Clinical Education Resources Following Premiere of the Movie AWAKE

Aspect Medical Systems (NASDAQ:ASPM), the global market leader in brain monitoring technology, has created patient and clinician-focused resources that present the facts about anesthesia awareness during surgery following the premiere of the movie AWAKE, which occurred in New York City last night. AWAKE, starring Hayden Christensen and Jessica Alba is described on the movie’s Web site as "a psychological thriller about a common occurrence called anesthetic awareness.” Awareness under general anesthesia occurs when surgical patients can recall their surroundings or an event—sometimes even pain—related to their surgery. Clinical studies have demonstrated that anesthesia awareness occurs in roughly one patient per thousand receiving general anesthesia. "We realize that people may see the movie or related promotional materials and become concerned about an upcoming surgery. It is important to remember that AWAKE is a piece of fictional entertainment. In reality, anesthesia awareness happens very infrequently and this remote possibility should not deter patients from having surgery,” said Scott Kelley, M.D., anesthesiologist and vice president and medical director of Aspect Medical Systems. "Anesthesia professionals are highly trained individuals who strive to help patients feel comfortable and informed about their experience with anesthesia and to ensure the best possible care of patients in the operating room. Patients should talk with their anesthesia professional before surgery to discuss all of their concerns, including the remote possibility of awareness, the approach to anesthesia that will be used, and how they will be monitored during surgery. Our goal in providing resources for patients and clinicians was to make the process of finding facts and clinical evidence easier for both parties.” Aspect Medical Systems has posted information on its Web site to provide medical professionals and patients with information about anesthesia, the facts and clinical evidence about anesthesia awareness and the role of brain monitoring in surgical care. Resources for anesthesia professionals include: A Web page which summarizes and links to the clinical evidence regarding the incidence of awareness and the role of BIS monitoring in reducing risk: http://www.aspectmedical.com/professionals/safety/default.mspx An interactive database, sponsored by Aspect and developed by Doctor Evidence®, that presents published clinical evidence regarding brain monitoring, including the role of brain monitoring technology in reducing risk of awareness with recall in adults: http://www.doctorevidence.com/brainmonitoring Resources for patients include: A Web page and brochure with answers to questions patients commonly ask about anesthesia and brain monitoring. This information is designed for patients to read prior to having surgery: http://www.aspectmedical.com/patients/ A video that patients can watch to understand how anesthesia works on the body and how a brain monitor can help an anesthesia professional to give each patient just the right amount of anesthesia: http://www.businesswire.com/cgi-bin/mmg.cgi?eid=5547695 Anesthesia providers use many monitoring technologies, in combination with their clinical judgment, to ensure that their patients are unconscious and free of pain during surgical procedures. Brain monitoring technologies are employed by a growing number of anesthesia professionals to help assess patient consciousness and adjust the amount of anesthetic medication during surgery in order to avoid over and under dosing. Numerous clinical studies, as well as a rigorous evidence-based review conducted by the Cochrane Collaboration, have demonstrated the clinical benefits of BIS monitoring. These benefits include improved anesthetic delivery and recovery from anesthesia, as well as reduced risk of awareness in adults - particularly in patients at increased risk. BIS monitoring has been proven to help clinicians reduce the incidence of awareness with recall in at risk adults by 80 percent and is the only brain monitoring technology with clinical evidence and an FDA clearance to support this claim. Today, more than 60 percent of all operating rooms in the U.S. are equipped with BIS monitors and more than 23 million patients have been monitored. More information about awareness and brain monitoring can be found at the following third party Web locations: Joint Commission - Strategies to Prevent and Manage Anesthesia Awareness ASA Practice Advisory for Intraoperative Awareness and Brain Function Monitoring AANA Position Statement Anesthesia Awareness Registry Anesthesia Awareness Campaign Aspect cautions you that Aspect’s Web site, and this press release, contain links to Web sites that are not operated, reviewed or controlled by Aspect. Aspect assumes no responsibility for the information or statements found on these other Web sites and such information and statements are not incorporated by reference into Aspect’s Web site or this press release. Moreover, Aspect also includes in this press release links to its own Web site. Aspect cautions you that the information on its Web site is not incorporated by reference into this press release and should not be considered to be a part of this press release. About Aspect Medical Systems, Inc. Aspect Medical Systems, Inc. (NASDAQ:ASPM) is a global market leader in brain monitoring technology. To date, the Company's Bispectral Index (BIS) technology has been used to assess approximately 23 million patients and has been the subject of more than 3,100 published articles and abstracts. BIS technology is installed in approximately 80 percent of hospitals listed in the July 2007 U.S. News and World Report ranking of America's Best Hospitals and in approximately 60 percent of all U.S. operating rooms. In the last twelve months BIS technology was used in approximately 17 percent of all U.S. surgical procedures requiring general anesthesia or deep sedation. BIS technology is available in more than 160 countries. Aspect Medical Systems has OEM agreements with nine leading manufacturers of patient monitoring systems. For more information, please visit the Aspect Medical Systems Web site at www.aspectms.com. Safe Harbor Statement Certain statements in this press release are forward-looking within the meaning of the Private Securities Litigation Reform Act of 1995 and may involve risks and uncertainties, including statements about the potential benefits of the Company’s brain monitoring technologies in helping anesthesia providers deliver anesthesia and in reducing the incidence of awareness and statements regarding the use and adoption of BIS monitoring technologies. There are a number of important factors that could cause actual results to differ materially from those indicated by these forward-looking statements. For example, future clinical trials could demonstrate different and/or unfavorable results regarding the potential benefits of the Company’s brain monitoring product. The Company may also not be able to achieve widespread market acceptance of its BIS monitoring technology, or to compete with new products or alternative techniques that may be developed by others, including third-party anesthesia monitoring products approved by the FDA. The Company also faces competitive and regulatory risks relating to its ability to successfully develop and introduce enhancements and new products including the BIS VISTA monitor and products based upon its neuroscience technology. Cases of awareness with recall during monitoring with the BIS system and significant product liability claims are among the factors that could limit market acceptance. There are other factors that could cause the Company's actual results to vary from its forward-looking statements, including without limitation those factors described under the heading "Risk Factors" in the Company's Quarterly Report on Form 10-Q for the quarter ended September 29, 2007, which is on file with the SEC. In addition, the statements in this press release represent the Company's expectations and beliefs as of the date of this press release. The Company anticipates that subsequent events and developments may cause these expectations and beliefs to change. However, while the Company may elect to update these forward-looking statements at some point in the future, it specifically disclaims any obligation to do so. These forward-looking statements should not be relied upon as representing the Company's expectations or beliefs as of any date subsequent to the date of this press release. Aspect, Bispectral Index and BIS are registered trademarks of Aspect Medical Systems, Inc. All other trademarks, service marks and company names are the property of their respective owners.