Scientific Learning Corp Watch

from SC 13G/A 1 page Joint Filing Agreement

from SC 13D/A 1 page Exhibit 1 Exhibit 1 of the Original 13d Is Hereby Amended and Restated in Its Entirety as Follows: Joint Filing Agreement This Joint Filing Agreement Is Entered Into as of August 15, 2007, by and Among the Parties Signatories Hereto. the Undersigned Hereby Agree That the Statement on Schedule 13d With Respect to the Shares of Common Stock, $0.001 Par Value Per Share, of Scientific Learning Corporation, a Delaware Corporation, Is, and Any Amendment Thereafter Signed by Each of the Undersigned Shall Be, Filed on Behalf of Each Undersigned Pursuant to and in Accordance With the Provisions of 13d-1(k) Under the Securities Exchange Act of 1934, as Amended. Dated: August 15, 2007 Warburg, Pincus Ventures, L.P. By: Warburg Pincus Partners LLC, Its General Partner By: Warburg Pincus & Co., Its Managing Member By: /S/ Scott A. Arenare Name: Scott A. Arenare Title: Partner Dated: August 15, 2007 Warburg Pincus & Co. By: /S/ Scott A. Arenare Name: Scott A. Arenare Title: Partner Dated: August 15, 2007 Warburg Pincus LLC By: /S/ Scott A. Arenare Name: Scott A. Arenare Title: Member Dated: August 15, 2007 Warburg Pincus Partners, LLC By: Warburg Pincus & Co., Its Managing Member By: /S/ Scott A. Arenare Name: Scott A. Arenare Title: Partner Dated: August 15, 2007 By: /S/ Scott A. Arenare Name: Charles R. Kaye By: Scott A. Arenare, Attorney-In-Fact* <page> Dated: August 15, 2007 By: /S/ Scott A. Arenare Name: Charles R. Kaye By: Scott A. Arenare, Attorney-In-Fact** * Power of Attorney Given by Mr. Kaye Was Previously Filed With the Securities and Exchange Commission on March 2, 2006 as an Exhibit to a Schedule 13d Filed by Building Products, LLC With Respect to Builders Firstsource, Inc. ** Power of Attorney Given by Mr. Landy Was Previously Filed With the Securities and Exchange Commission on March 2, 2006 as an Exhibit to a Schedule 13d Filed by Building Products, LLC With Respect to Builders Firstsource, Inc. <page>

from SC 13G/A ~5 pages Cusip No. 808760102 13g Page 12 of 12 Exhibit 1 to Schedule 13g August 15, 2007

from S-1/A 34 pages Scientific Learning Corporation 7,661,638 Shares(a) Common Stock ($0.001 Par Value) Underwriting Agreement

from SC 13G/A ~5 pages Exhibit 1 to Schedule 13g February 13, 2007

from SC 13G/A 1 page Trigran Investments, Inc. By: /S/ Lawrence A. Oberman Name: Lawrence A. Oberman Title: Executive Vice President Trigran Investments, L.P., By: /S/ Lawrence A. Oberman Name: Lawrence A. Oberman Title: Director Douglas Granat /S/ Douglas Granat Lawrence A. Oberman /S/ Lawrence A. Oberman 10

from SC 13G/A ~5 pages Cusip No. 808760102 13g Page 10 of 10 Exhibit 1 to Schedule 13g February 8, 2006

from SC 13G/A 1 page Trigran Investments, Inc. By: /S/ Lawrence A. Oberman Name: Lawrence A. Oberman Title: Executive Vice President Trigran Investments, L.P., By: /S/ Lawrence A. Oberman Name: Lawrence A. Oberman Title: Director Douglas Granat /S/ Douglas Granat Lawrence A. Oberman /S/ Lawrence A. Oberman 1

from SC 13D 1 page <page> Joint Filing Agreement the Undersigned Hereby Agree That the Statement on Schedule 13d Filed by the Undersigned With Respect to the Common Stock, $0.001 Par Value Is, and Any Amendment Thereto Signed by Each of the Undersigned Shall Be, Filed on Behalf of Each of the Undersigned Pursuant to and in Accordance With the Provisions of Rule 13d-1(k) Under the Securities Exchange Act of 1934, as Amended. Dated: March 19, 2001 Warburg, Pincus & Co. By: /S/ Reuben S. Leibowitz Name: Reuben S. Leibowitz Title: Partner Dated: March 19, 2001 E.M. Warburg, Pincus & Co., LLC By: /S/ Reuben S. Leibowitz Name: Reuben S. Leibowitz Title: Member Dated: March 19, 2001 Warburg, Pincus Ventures, L.P. By: Warburg, Pincus & Co., General Partner By: /S/ Reuben S. Leibowitz Name: Reuben S. Leibowitz Title: Partner

from S-1/A ~50 pages Underwriting agreement

from S-1/A ~50 pages Underwriting agreement