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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0000891836-09-000079.txt : 20090311
<SEC-HEADER>0000891836-09-000079.hdr.sgml : 20090311
<ACCEPTANCE-DATETIME>20090311172700
ACCESSION NUMBER:		0000891836-09-000079
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090302
FILED AS OF DATE:		20090311
DATE AS OF CHANGE:		20090311

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Colin Samuel F
		CENTRAL INDEX KEY:			0001458243

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24663
		FILM NUMBER:		09673411

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		212 756 3244

	MAIL ADDRESS:	
		STREET 1:		437 MADISON AVENUE - 31ST FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ASPECT MEDICAL SYSTEMS INC
		CENTRAL INDEX KEY:			0000886235
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS [3845]
		IRS NUMBER:				042985553
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		ONE UPLAND ROAD
		CITY:			NORWOOD
		STATE:			MA
		ZIP:			02062-1546
		BUSINESS PHONE:		(617) 559-7000

	MAIL ADDRESS:	
		STREET 1:		ONE UPLAND ROAD
		CITY:			NORWOOD
		STATE:			MA
		ZIP:			02062-1546

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FIRST MANHATTAN CO
		CENTRAL INDEX KEY:			0000728083
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24663
		FILM NUMBER:		09673410

	BUSINESS ADDRESS:	
		STREET 1:		437 MADISON AVE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		2127563300

	MAIL ADDRESS:	
		STREET 1:		437 MADISON AVE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			First BioMed Management Associates LLC
		CENTRAL INDEX KEY:			0001458280
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24663
		FILM NUMBER:		09673412

	BUSINESS ADDRESS:	
		STREET 1:		437 MADISON AVENUE - 31ST FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		212 756 3300

	MAIL ADDRESS:	
		STREET 1:		437 MADISON AVENUE - 31ST FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>sc0034-09_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2009-03-02</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000886235</issuerCik>
        <issuerName>ASPECT MEDICAL SYSTEMS INC</issuerName>
        <issuerTradingSymbol>ASPM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001458280</rptOwnerCik>
            <rptOwnerName>First BioMed Management Associates LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>437 MADISON AVENUE - 31ST FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001458243</rptOwnerCik>
            <rptOwnerName>Colin Samuel F</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>437 MADISON AVENUE - 31ST FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000728083</rptOwnerCik>
            <rptOwnerName>FIRST MANHATTAN CO</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>437 MADISON AVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1351179</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Note</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">In addition to First BioMed Management Associates, LLC, this form is being filed jointly by First Manhattan Co. and Samuel F.
 Colin, the sole co-managing members of First BioMed Management Associates, LLC, each of whom has the same business address
 as First BioMed Management Associates, LLC.  Each reporting person disclaims beneficial ownership of the securities reported
 hereon except to the extent of its or his pecuniary interest, if any, therein.</footnote>
        <footnote id="F2">Represents securities held directly for the accounts of First BioMed, L.P. and First BioMed Portfolio, L.P., limited
 partnerships of which First BioMed Management Associates, LLC is the general partner and investment adviser.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Neal K. Stearns, Managing Member, First Manhattan LLC, General Partner of First Manhattan Co., Co-Managing Member of First BioMed Management Associates, LLC</signatureName>
        <signatureDate>2009-03-06</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/Samuel F. Colin</signatureName>
        <signatureDate>2009-03-06</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Neal K. Stearns, Managing Member of First Manhattan LLC, General Partner of First Manhattan Co.</signatureName>
        <signatureDate>2009-03-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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