-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
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 gjnHHjXiNZVFkWP+I5uJoA==

<SEC-DOCUMENT>0001104659-08-077224.txt : 20081218
<SEC-HEADER>0001104659-08-077224.hdr.sgml : 20081218
<ACCEPTANCE-DATETIME>20081218124028
ACCESSION NUMBER:		0001104659-08-077224
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20081217
FILED AS OF DATE:		20081218
DATE AS OF CHANGE:		20081218

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GRANAT DOUGLAS
		CENTRAL INDEX KEY:			0001361700

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24547
		FILM NUMBER:		081256915

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		847-251-8300

	MAIL ADDRESS:	
		STREET 1:		3201 OLD GLENVIEW ROAD
		STREET 2:		SUITE 235
		CITY:			WILMETTE
		STATE:			IL
		ZIP:			60091

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Oberman Lawrence A
		CENTRAL INDEX KEY:			0001361701

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24547
		FILM NUMBER:		081256916

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		847-251-8300

	MAIL ADDRESS:	
		STREET 1:		3201 OLD GLENVIEW ROAD
		STREET 2:		SUITE 235
		CITY:			WILMETTE
		STATE:			IL
		ZIP:			60091

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Simon Steven G.
		CENTRAL INDEX KEY:			0001409828

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24547
		FILM NUMBER:		081256914

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		(847) 656-1640

	MAIL ADDRESS:	
		STREET 1:		TRIGRAN INVESTMENTS, INC.
		STREET 2:		630 DUNDEE ROAD, SUITE 230
		CITY:			NORTHBROOK
		STATE:			IL
		ZIP:			60062

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SCIENTIFIC LEARNING CORP
		CENTRAL INDEX KEY:			0001042173
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-EDUCATIONAL SERVICES [8200]
		IRS NUMBER:				943234458
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		300 FRANK H. OGAWA PLAZA
		STREET 2:		STE 600
		CITY:			OAKLAND
		STATE:			CA
		ZIP:			94612-2040
		BUSINESS PHONE:		5104443500

	MAIL ADDRESS:	
		STREET 1:		300 FRANK H. OGAWA PLAZA
		STREET 2:		SUITE 600
		CITY:			OAKLAND
		STATE:			CA
		ZIP:			94612-2040

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TRIGRAN INVESTMENTS LP
		CENTRAL INDEX KEY:			0000905558
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24547
		FILM NUMBER:		081256918

	BUSINESS ADDRESS:	
		STREET 1:		3201 OLD GLENVIEW ROAD
		STREET 2:		SUITE 235
		CITY:			WILMETTE
		STATE:			IL
		ZIP:			60091
		BUSINESS PHONE:		8472518300

	MAIL ADDRESS:	
		STREET 1:		3201 OLD GLENVIEW ROAD
		STREET 2:		SUITE 235
		CITY:			WILMETTE
		STATE:			IL
		ZIP:			60091

	FORMER NAME:	
		FORMER CONFORMED NAME:	TRIGRAN INVESTMENTS L P
		DATE OF NAME CHANGE:	19930520

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TRIGRAN INVESTMENTS LP II
		CENTRAL INDEX KEY:			0001315014

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24547
		FILM NUMBER:		081256917

	BUSINESS ADDRESS:	
		STREET 1:		3201 OLD GLENVIEW ROAD
		STREET 2:		#235
		CITY:			WILMETTE
		STATE:			IL
		ZIP:			60091
		BUSINESS PHONE:		8472518300

	MAIL ADDRESS:	
		STREET 1:		3201 OLD GLENVIEW ROAD
		STREET 2:		#235
		CITY:			WILMETTE
		STATE:			IL
		ZIP:			60091

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Trigran Investments, Inc.
		CENTRAL INDEX KEY:			0001336800
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24547
		FILM NUMBER:		081256919

	BUSINESS ADDRESS:	
		STREET 1:		3201 OLD GLENVIEW ROAD
		STREET 2:		SUITE 235
		CITY:			WILMETTE
		STATE:			IL
		ZIP:			60091
		BUSINESS PHONE:		8472518300

	MAIL ADDRESS:	
		STREET 1:		3201 OLD GLENVIEW ROAD
		STREET 2:		SUITE 235
		CITY:			WILMETTE
		STATE:			IL
		ZIP:			60091
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-12-17</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001042173</issuerCik>
        <issuerName>SCIENTIFIC LEARNING CORP</issuerName>
        <issuerTradingSymbol>SCIL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001336800</rptOwnerCik>
            <rptOwnerName>Trigran Investments, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>630 DUNDEE ROAD SUITE 230</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NORTHBROOK</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60062</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000905558</rptOwnerCik>
            <rptOwnerName>TRIGRAN INVESTMENTS LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>630 DUNDEE ROAD SUITE 230</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NORTHBROOK</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60062</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001315014</rptOwnerCik>
            <rptOwnerName>TRIGRAN INVESTMENTS LP II</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>630 DUNDEE ROAD SUITE 230</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NORTHBROOK</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60062</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001361701</rptOwnerCik>
            <rptOwnerName>Oberman Lawrence A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>630 DUNDEE ROAD SUITE 230</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NORTHBROOK</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60062</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001361700</rptOwnerCik>
            <rptOwnerName>GRANAT DOUGLAS</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>630 DUNDEE ROAD SUITE 230</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NORTHBROOK</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60062</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001409828</rptOwnerCik>
            <rptOwnerName>Simon Steven G.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>630 DUNDEE ROAD SUITE 230</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NORTHBROOK</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60062</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-12-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>5525</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.9428</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3320763</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-12-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3014</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.9428</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1811792</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Trigran Investments, L.P. acquired 5,525  shares on December 17, 2008.</footnote>
        <footnote id="F2">Trigran Investments, L.P. II acquired 3,014 shares on December 17, 2008.</footnote>
        <footnote id="F3">The shares are held as follows: 3,320,763 by Trigran Investments, L.P and 1,811,792 by Trigran Investments, L.P. II after the purchases identified in this report. Douglas Granat, Lawrence A. Oberman and Steven G. Simon are controlling shareholders and directors of Trigran Investments, Inc. Trigran Investments, Inc. is the general partner of Trigran Investments, L.P. and Trigran Investments, L.P. II. Each member of the group disclaims beneficial ownership of the securities except to the extent of its pecuniary interest therein. Each member of the group has the same address listed above for Trigran Investments, Inc., the group's designated filer.</footnote>
    </footnotes>

    <remarks>*** As Executive Vice President and Director of Trigran Investments, Inc., the General Partner of Trigran Investments, L.P. and Trigran Investments, L.P. II, individually and as attorney-in-fact on behalf of Douglas Granat and Steven G. Simon.</remarks>

    <ownerSignature>
        <signatureName>/s/ Lawrence A. Oberman***</signatureName>
        <signatureDate>2008-12-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----