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Newsletter -
Edition Nine
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December 23, 2008
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Neuralynx Office
Hours through the holidays are:
Closed:
December 24th, 25th, 26th, 31st (at
12:00pm M.S.T.), January 1st and 2nd.
Open for Sales/Support:
December 29th, 30th, and morning of the December 31st (until 12:00pm
M.S.T.)
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TECHNICAL TIP OF THE DAY - Stimulus Channels -
Definition and Use
by: Casey Stengel
All of our headstages, except the HS-16 and HS-8, have two differential
Stimulus Channels as part of the Recording System (ERP), Tether,
Headstage and Electrode Interface Board assembly. The Stimulus
Channels were first provided to deliver MFB Reward Stimulation for the
rats that flew on the 1998 NASA/NIH NeuroLab Space Shuttle mission
(McNaughton, Knierim, Barnes, Poe, et.al.) because liquid chocolate milk
just wouldn't work in zero gravity in space.
Each Stimulus Channel consists of a PAIR of Wires (connections) that run
from the Recording System (Digital Lynx DRS or the ERP) thru the Tether,
Headstage, and EIB. These are dedicated conductors between the
Stimulus Input Connections on the Recording System and the
Headstage. There are no electronic connections (to power, or
ground, etc) on these conductors the entire path between the Recording
System and the EIB (except for one use noted below). There always
has to be an exception to every rule! 8-)
These Stimulus Channels can be use for other purposes than the original
intent which was to deliver a differential current electrical stimulus to
the brain. The most common alternative use is for powering the
Video Tracker LEDs on the HS-27, and some models of HS-36.
All new headstage designs now power the LEDs from the headstage
power instead of from the Stimulus Lines.
Back to the use of the stimulus lines... because these are
"direct wired connections" these may be used to send signals to
or from the animal; ie, you can drive stimulus to the animal or they may
be used to send a signal from the animal to the recording system.
An example of this would be a custom eye-blink detector circuit that is
mounted in front of the animal's eye. The high level signal from
the detector would be sent up the stimulus channel wires and
used/interfaced as needed.
There are many uses for the Stimulus Channels. If you would like to
investigate any ideas you have please contact Support@Neuralynx.com
or simply give us a call and talk to one of our Engineers.
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TRACKING THE
STATUS OF YOUR ORDER
For ordering, checking up on an order's
status, or shipping details, please be sure to use our sales@neuralynx.com
email address.
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TECH SUPPORT
ISSUES
For tech support questions, please be
sure to use our support@neuralynx.com email
address.
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THE NEURALYNX
MISSION STATEMENT
"We are the preferred provider of high quality
electrophysiology hardware and software solutions for the neuroscience
research community and the specific markets of epilepsy research and
multi-unit neurosurgery support."
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© Copyright 2008, Neuralynx,Inc.,
All Rights Reserved.
105 Commercial Dr., Bozeman,
MT 59715
Phone: (406) 585-4542 Fax:
(406) 585-9034
sales@neuralynx.com
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