Stock Option Agreement

Exhibit 10.57

STOCK OPTION AGREEMENT AMENDMENT
AND
BONUS AGREEMENT

     THIS STOCK OPTION AGREEMENT AMENDMENT AND BONUS AGREEMENT (the “Agreement”) is made this 29th day of December, 2006 between Cyberonics, Inc. (the “Company”) and Randal Simpson (the “Optionee”).

     WHEREAS, the Company previously granted to the Optionee the options identified on attached Schedule A (the “Options”) to purchase shares of the Company’s common stock under the Company’s Stock Incentive Plan(s), as amended and restated, and as identified as such on Schedule A (the “Plan(s)”).

     WHEREAS, the Company and the Optionee entered into a formal Stock Option Agreement (the “Option Agreement”) evidencing each such Option.

     WHEREAS, in order to avoid adverse tax consequences under section 409A of the Internal Revenue Code, the Optionee desires to amend each of the Options to increase the exercise price per share to be in effect for the unexercised portion of that Option which is subject to section 409A and identified as such on Schedule A (the “Covered Portion”) to the higher exercise price per share indicated for that portion of such Option on Schedule A.

     WHEREAS, in order to compensate the Optionee for the increased exercise prices to be in effect for the Covered Portions of the Options, the Company is willing to pay the Optionee a special cash bonus in a dollar amount equal to the aggregate increase to the exercise prices for the Covered Portions of the Options listed on Schedule A, with the actual dollar of that bonus indicated as the Total Bonus on Schedule A and payable as provided herein.

     NOW THEREFORE, the parties hereby agree as follows:

     1. Increased Exercise Price. The exercise price per share set forth in the Option Agreement for each of the Options listed on Schedule A is hereby increased, with respect to the shares subject to the Covered Portion of that Option, to the higher exercise price per share set forth for that Option on Schedule A.

     2. Bonus. The Optionee shall become entitled to receive a cash bonus from the Company in the gross dollar amount indicated as his or her Total Bonus on attached Schedule A (the “Bonus”) effective on the date of vesting, with payment as follows:

     (i) the bonus payable with respect to shares that vest prior to January 1, 2008 will be paid on or about January 15, 2008, and

     (ii) the bonus payable with respect to shares that vest on or after January 1, 2008 will be payable only if such shares vest and will be paid quarterly for the shares that vested during the preceding fiscal quarter. Such

payment will be made within 14 days following the close of each fiscal quarter or, in the event of an acceleration of vesting pursuant to the terms of any other agreement governing the vesting of the options under the Option Agreements, within 14 days following the event.

          Payment of the Bonus shall be subject to the Company’s collection of all applicable federal, state and local income and employment withholding taxes, and the Optionee shall be paid only the net amount of such bonus remaining after such taxes have been collected.

     3. Entire Agreement. This Agreement, together with the Option Agreements (to the extent not expressly amended in a separate amendment or amended hereby) and the Plan(s), represents the entire agreement of the parties with respect to the subject matter hereof and the Bonus and supersedes any and all previous contracts, arrangements or understandings between the parties with respect to such Options and the Bonus. This Agreement may be amended at any time only by means of a writing signed by the Optionee and an authorized officer of the Company.

     4. Continuation of Option Agreements. Except for the foregoing increases to the exercise prices per share for the Covered Portions of the Options, no other terms or provisions of the Option Agreements for such Options or the applicable Plan(s) have been modified as a result of this Agreement, and those terms and provisions shall continue in full force and effect.

     IN WITNESS WHEREOF, the parties have executed this Agreement on the day and year indicated above.

		CYBERONICS, INC.
		/s/ John A. Riccardi
		By: John A. Riccardi
		TITLE: Vice President, Finance
		OPTIONEE
		By: Randal L. Simpson

SCHEDULE A

Number of

Unexercised

Option Shares

Applicable

Increased

Aggregate

Potential

Exercise Price

Which Vest After

Measurement

Exercise Price

Increase in

Retention Bonus

Name

Plan

Grant Date

Per Share

12/31/04

Date

Per Share*

Exercise Price

**

Simpson, Randal

1997 Plan

10/27/03

$

26.49

49,067

11/03/03

$

0.86

$

42,197.62

$

42,197.62

Total

$

42,197.62