We would be happy to take suggestions for additional sources to add to
this list. Please send suggestions to email@example.com,
including a complete address and the useful items. Conversely, if there
is some supply or piece of equipment that you have trouble finding, let
us know and we will add our source for it to this page.
To subscribe to the list, send a message to firstname.lastname@example.org
with "subscribe crawdad-L <your real name>" in the body
of the message.
In addition to the sources cited below, be sure to check our downloads
page for do-it-yourself designs. Currently, we have a designs for an inexpensive
extracellular amplifier and suction electrode.
A-M Systems, Inc.
11627-A Airport Road
Everett, WA 98204
Relatively inexpensive micromanipulators, such as the Taurus or
Kite (good for extracellular) and MM33 (good for intra- and extracellular).
Both manipulators clamp to 12 mm diameter rods.
See Enco, below, for magnetic
bases and 12 mm rods to hold micromanipulators.
We do not have a lot of experience with data acquisition systems, having
relied for years on an old A/D board and custom-written software. Thus
we do not have any specific recommendations. If any Crawdad users have
reviewed systems or would like to contribute their comments on any of
these, we would like to hear from you (email@example.com).
Data acqusition requirements for neurophysiology are not particularly
stringent. All you really need is two channels of input and two channels
of output, with a minimum sampling rate of 10 kHz (20 kHz is nice at times,
as is 100 kHz for electric fish signals). Our advice is to preview the
software as closely as possible before buying a system. If the software
is overly complex or is difficult to use, you will spend a lot of time
helping your students with the software and have less time to teach neurobiology!
AD Instruments, Inc.
2205 Executive Circle
Colorado Springs, CO 80906
1-719-576-3971 fax firstname.lastname@example.org
AgCl "pellet" electrode (catalog # E242) for a long-lasting
Because crayfish are used in restaurants, there are many suppliers. These
are just the ones we have used or that have been recommended to us by
others. Procambarus and Helix cannot be shipped into California
because of agricultural regulations. However, Helix is readily
found in gardens and Procambarus can be found at bait shops in
California; these items may also be available from a California supplier
(Niles, see below).
Note: Do not release unused crayfish or snails into the wild. Both can
be invasive and may displace local species. Besides, it may be against
state laws. Check with your state agriculture departmen tor other relevant
Weakly electric fish (used in Lab 1, Membrane Properties) can be found
at well-stocked pet stores, but usually in small quantities. It is best
to start looking for them well ahead of time. Pulse fish like the "baby
whales", "roundnose whales", and "elephant nose"
are the most interesting for the lab, but it is interesting to check a
wave fish ("brown ghost" or "black ghost" knifefish)
as well. A search of the internet reveals several stores that sell these
fish, but we have no experience ordering fish and cannot recommend any
Atchafalaya Biological Supply
832 St. Phillip Street
Raceland, LA 70394
Crayfish ("large" is probably Procambarus, cannot
be shipped to California).
Land snails (Helix aspersa). These may be available without
a USDA permit.
The suppliers listed below do not sell equipment specifically for neurobiology,
or even specifically for scientific use. However, they do have many useful
items, especially if you want to save money by fabricating your own equipment
or electronics. It's worth requesting catalogs from these companies; inspiration
will come later!
P.O. Box 567
Van Nuys, CA 91408-0567
Many useful small mechanical parts;
use your imagination!
They have 6" long 12 mm diameter steel rods (required for
manipulators), but they are expensive. You may prefer to lathe a
1/2" diameter aluminum rod or cut a 36" steel rod from
Disclaimer: Neither Cornell University nor the National Science Foundation
endorses any particular supplier. We include these addresses as a service
for those who have asked us where to obtain parts or supplies. Obviously,
we cannot take responsibility for the suitability of any equipment obtained
through these suppliers, etc. etc. etc.
Page content updated
2 April, 2012
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