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the Axon CNS Guide
A GuIde to eleCtropHySIoloGy & BIopHySICS lABorAtory teCHNIqueS
The Axon CNS Guide to
Electrophysiology & Biophysics
Laboratory Techniques
Part Number 2500-102 Rev B
200
Printed in U.S.A.
COPYRIGHT
The Axon CNS Guide
1993-2006 by Molecular Devices Corporation. All rights reserved. This book may not be
reproduced, stored in retrieval system, or transmitted, in any form or by any means, electronic,
mechanical, photocopying, microfilming, recording or otherwise, in whole or in part for any
purpose whatever, without written permission from the publisher. For information address
Molecular Devices Corporation,
3280 Whipple Road, Union City, CA 94587-1217.
DISCLAIMER
All product names mentioned in this guide are registered trademarks of their respective
manufacturers. Any mention of specific products should not be construed as an endorsement by
Molecular Devices Corporation.
PREFACE
Molecular Devices Corporation is pleased to present you with The Axon CNS Guide (2
nd
ed.), a labora-
tory guide to electrophysiology and biophysics. The purpose of this guide is to serve as an information
and data resource for electrophysiologists. It covers a broad scope of topics ranging from the biological
basis of bioelectricity and a description of the basic experimental setup to a discussion of mechanisms of
noise and data analysis.
The Axon CNS Guide second edition is a tool benefitting both the novice and the expert electrophysiolo-
gist. Newcomers to electrophysiology will gain an appreciation of the intricacies of electrophysiological
measurements and the requirements for setting up a complete recording and analysis system. For experi-
enced electrophysiologists, we include in-depth discussions of selected topics, such as advanced methods
in electrophysiology and noise.
However, as time passes, so has the field of electrophysiology evolved, as well as the depth and com-
plexity of instruments and software. Since the first edition of this guide was originally published, much
of the computer and programming examples have become dated over the years. Nevertheless, we believe
that this reprint remains a valuable contribution to our customers and to the field of electrophysiology
and biophysics.
This guide was the product of a collaborative effort of many researchers in the field of electrophysiology
and of Molecular Devices/Axon Instruments staff. We are deeply grateful to these individuals for sharing
their knowledge and devoting significant time and effort to this endeavor.
David Yamane
Director, Electrophysiology Marketing
Molecular Devices
October 2006
AXON CNS GUIDE
INTRODUCTION
Molecular Devices designs and manufactures instrumentation, reagents and software for a wide
variety of life sciences disciplines and drug discovery applications. As part of a world-class array of
products, the well-known Axon Instruments line of conventional electrophysiology hardware and
software products now comprise the Molecular Devices line of Axon CNS products.
In parallel, Molecular Devices has also developed higher throughput automated electrophysiology
systems that have now become accepted components of the drug discovery process. Ion channel
research now spans a broad spectrum of institutions, from academic institutions to biotech startups
and pharmaceutical corporations.
In recognition of the the continuing excitement in ion channel research, as evidenced by the influx
of molecular biologists, biochemists, and pharmacologists into this field, Molecular Devices is
proud to support your pursuit of electrophysiological and biophysical research with this laboratory
techniques workbook, The Axon CNS Guide.
Acknowledgment to Molecular Devices Consultants and Customers
Molecular Devices employs a talented team of engineers and scientists dedicated to designing
instruments and software incorporating the most advanced technology and the highest quality.
Nevertheless, it would not be possible for us to enhance our products without close
collaborations with members of the scientific community. These collaborations take many
forms.
Some scientists assist Molecular Devices on a regular basis, sharing their insights on current
needs and future directions of scientific research. Others assist us by virtue of a direct
collaboration in the design of certain products. Many scientists help us by reviewing our
instrument designs and the development versions of various software products. We are grateful
to these scientists for their assistance. We also receive a significant number of excellent
suggestions from the customers we meet at scientific conferences. To all of you who have
visited us at our booths and shared your thoughts, we extend our sincere thanks. Another source
of feedback for us is the information that we receive from the conveners of the many excellent
summer courses and workshops that we support with equipment loans. Our gratitude is extended
to them for the written assessments they often send us outlining the strengths and weaknesses of
Molecular Devices’ Axon CNS products.
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