[vslist] advice on a stimulus isolator bipolar/ biphasic output
david.chelva@unsw.edu.au
david.chelva@unsw.edu.au
Wed Jul 28 08:22:12 2004
This is a multi-part message in MIME format.
------=_NextPart_000_0003_01C474D0.271C4440
Content-Type: text/plain;
charset="us-ascii"
Content-Transfer-Encoding: 7bit
Dear Subscribers,
Seeking advice on obtaining an external clinical stimulator that may be
used on humans to produce brief bipolar pulses.
Specifically, we would want to deliver (0-20 mA) through cortical
electrodes for brief epochs of about (40 to 1200 micro seconds) first
positive pulse then immediately followed by a negative pulse for zero
net charge balance. I belive devices for this purpose usually come
separately as a programable pulse train generator and a stimulus
isolator, the latter are not always bipolar and safe for human use. A
recomendation on an isolator type and manufacturer woud be greatly
appreciated.
respectfully,
Dr.David K.Chelvanayagam
Department of Physiology and Pharmacology
School of Medical Sciences
University of New South Wales, (2052)
Kensington Campus
Tel: (02) 9385 3815
FAX: (02) 9385 1059
email: david.chelva@UNSW.edu.au
------=_NextPart_000_0003_01C474D0.271C4440
Content-Type: text/html;
charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; =
charset=3Dus-ascii">
<TITLE>Message</TITLE>
<META content=3D"MSHTML 6.00.2800.1400" name=3DGENERATOR></HEAD>
<BODY>
<DIV><FONT face=3DArial size=3D2>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D906182705-27072004>Dear=20
Subscribers,</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D906182705-27072004></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D906182705-27072004>Seeking advice on=20
obtaining an external clinical stimulator that may be used on =
humans to=20
produce brief bipolar pulses. </SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D906182705-27072004></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D906182705-27072004>Specifically, we=20
would want to deliver (0-20 mA) through cortical electrodes for brief =
epochs=20
of about (40 to 1200 micro seconds) first positive pulse then=20
immediately followed by a negative pulse for zero net charge=20
balance. </SPAN></FONT><FONT face=3DArial size=3D2><SPAN=20
class=3D906182705-27072004>I belive devices for this purpose =
usually come=20
separately as a programable pulse train generator and a stimulus =
isolator, the=20
latter are not always bipolar and safe for human use. A=20
recomendation on an isolator type and manufacturer woud be greatly=20
appreciated. </SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D906182705-27072004></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D906182705-27072004> respectfully,</SPAN></FONT></DIV></FONT>=
</DIV>
<DIV> </DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>Dr.David =
K.Chelvanayagam</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>Department of Physiology =
and=20
Pharmacology</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>School of Medical =
Sciences</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>University of New South =
Wales,=20
(2052)</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>Kensington =
Campus</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>Tel: (02) 9385 =
3815</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>FAX: (02) 9385 =
1059</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>email: <A=20
href=3D"mailto:david.chelva@UNSW.edu.au">david.chelva@UNSW.edu.au</A></FO=
NT></DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV> </DIV></BODY></HTML>
------=_NextPart_000_0003_01C474D0.271C4440--