HYTERRA LTD — Board/Management Information 2008

Mar 30, 2008

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www.brainz.com ARBN 116 829 675

ASX Announcement

Board Changes

Directors Roger Sharp and Justin Vaughan to leave the board

31st March 2008: BrainZ Instruments (ASX:BZI) announced today Mr. Roger Sharp and Dr. Justin Vaughan have resigned their positions as directors of the company. Both cited that increasing demands of their executive roles in other organisations is preventing them from spending the time required to contribute as directors of the company.

Roger Sharp is managing director of Co-Investor Capital Partners Pty Limited a Sydney based investment firm and joined the board as a non executive director in July of 2006. Justin Vaughan is the chief executive officer of New Zealand Cricket and has served both as an executive and non executive director since the IPO of BrainZ Instruments in December of 2005. Justin originally joined BrainZ as chief executive of the company in July 2003.

BrainZ would like to thank both Roger and Justin for their hard work and contributions to the company. We wish them the best in their future endeavours.

Inquiries:

Richard Smith Chief Executive Officer BrainZ +1 443 280 2920

Rudi Michelson Monsoon Communications 03 9620 3333

About BrainZ

BrainZ (ASX: BZI) is a New Zealand based medical technology company specializing in the research, development, manufacturing and sale of bedside brain monitoring technology. The BRM3 Brain Monitor, BrainZ’s second generation product, is a unique bedside tool that assists in the detection of brain injury and seizure activity in neonates. It has been specifically designed to assist intensive care staff with clinical decision-making in conjunction with other clinical data and in the direction of care on a day-today basis.

The BRM3 has received regulatory approval in most major markets and is in use in over 20 countries worldwide. BrainZ dominates the local Australian and New Zealand markets via direct sales channels. BRM2 monitors are also installed in over 40 leading US hospitals. BrainZ has an exclusive agreement with GE Healthcare, a leading supplier of patient monitoring systems, for the distribution of BRM3 Brain Monitors in the North American, European, Middle East and Asian markets.

BrainZ Instruments was established in 2001 to commercialize pioneering neonatal brain research from the Auckland University’s Liggins Institute.