Re: mechanical cochlear model (Sunil Puria )


Subject: Re: mechanical cochlear model
From:    Sunil Puria  <puria@xxxxxxxx>
Date:    Wed, 3 Mar 2010 09:17:43 -0800
List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>

--Apple-Mail-300--580828393 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 Hello everyone, Rather a large scale model, we built a one-to-one scale model of the=20 human cochlea using silicone etching techniques. The orthotropic=20 basilar membrane was put into a chamber with fluid on both sides.=20 We show that in this passive model, there is a traveling wave.=20 The reference is: Wittbrodt, M.J., Steele, C.R., Puria, S. (2006), =93Developing a = physical model of the human cochlea using micro-fabricated methods.=94 = Audiology-Neurotology 11(2): 104-12. Karl Grosh and his student have also built a physical model of the = cochlea. The reference for that is: White RD, Grosh K: Microengineered hydromechanical cochlear model. Proc = Natl Acad Sci USA 2005; 102: 1296-1301. On Mar 2, 2010, at 10:22 PM, Lina Reiss wrote: > There is a mechanical model similar to what you describe at the = University of Utah: > http://www.bioen.utah.edu/faculty/RDR/index.php?cat_id=3D3&pti=3D11 >=20 > They cite the following paper for the passive version of the model: > R. Keolian (1991), J. Acoust. Soc. Am. 89 >=20 > Hope this helps! >=20 > Lina >=20 Sunil Puria, PhD Stanford University Depts. of ME & OHNS OtoBiomechanics Group http://www.stanford.edu/people/puria 5th International Middle Ear Mechanics in Research and Otology meeting: = http://memro2009.stanford.edu --Apple-Mail-300--580828393 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252 <html><head></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; = "><div>Hello everyone,</div><div><br></div><div>Rather a large scale = model, we built a one-to-one scale model of the&nbsp;</div><div>human = cochlea using silicone etching techniques.&nbsp;The = orthotropic&nbsp;</div><div>basilar membrane was&nbsp;put into a chamber = with&nbsp;fluid on both sides.&nbsp;</div><div>We show that in = this&nbsp;passive&nbsp;model, there is a traveling = wave.&nbsp;</div><div>The reference is:</div><div><br></div><div><span = style=3D"line-height: 13.3px;" class=3D"style_1">Wittbrodt, M.J., = Steele, C.R., </span><span style=3D"line-height: 13.3px;" = class=3D"style_9">Puria</span><span style=3D"line-height: 13.3px;" = class=3D"style_1">, S. (2006), =93</span>Developing a physical model of = the human cochlea using micro-fabricated methods<span = style=3D"line-height: 13.3px;" class=3D"style_1">.=94 </span><span = style=3D"line-height: 13.3px;" = class=3D"style_12">Audiology-Neurotology</span><span style=3D"line-height:= 13.3px;" class=3D"style_1"> 11(2): 104-12.</span><span = style=3D"line-height: 13.3px;" = class=3D"style_9"><br></span></div><div><br></div><div>Karl Grosh and = his student have also built a physical model of the = cochlea.</div><div>The reference for that = is:</div><div><br></div><div><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal = normal normal 7.5px/normal Helvetica; font-size: 18px; ">White RD, Grosh = K: Microengineered hydromechanical&nbsp;cochlear model. Proc Natl Acad = Sci&nbsp;USA 2005; 102: 1296-1301.</div></div><div><br><div><div>On Mar = 2, 2010, at 10:22 PM, Lina Reiss wrote:</div><br = class=3D"Apple-interchange-newline"><blockquote type=3D"cite"><div>There = is a mechanical model similar to what you describe at the University of = Utah:<br><a = href=3D"http://www.bioen.utah.edu/faculty/RDR/index.php?cat_id=3D3&amp;pti= =3D11">http://www.bioen.utah.edu/faculty/RDR/index.php?cat_id=3D3&amp;pti=3D= 11</a><br><br>They cite the following paper for the passive version of = the model:<br>R. Keolian (1991), J. Acoust. Soc. Am. 89<br><br>Hope this = helps!<br><br>Lina<br><br></div></blockquote></div><br><div> <span class=3D"Apple-style-span" style=3D"font-size: 18px; "><div = style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; = -webkit-line-break: after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-size: 18px; font-style: normal; font-variant: normal; = font-weight: normal; letter-spacing: normal; line-height: normal; = orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; = widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; = -webkit-border-vertical-spacing: 0px; = -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-size: 18px; font-style: normal; font-variant: normal; = font-weight: normal; letter-spacing: normal; line-height: normal; = orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; = widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; = -webkit-border-vertical-spacing: 0px; = -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-size: 18px; font-style: normal; font-variant: normal; = font-weight: normal; letter-spacing: normal; line-height: normal; = orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; = widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; = -webkit-border-vertical-spacing: 0px; = -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-size: 18px; font-style: normal; font-variant: normal; = font-weight: normal; letter-spacing: normal; line-height: normal; = orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; = widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; = -webkit-border-vertical-spacing: 0px; = -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-size: 18px; font-style: normal; font-variant: normal; = font-weight: normal; letter-spacing: normal; line-height: normal; = orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; = widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; = -webkit-border-vertical-spacing: 0px; = -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-size: 18px; font-style: normal; font-variant: normal; = font-weight: normal; letter-spacing: normal; line-height: normal; = orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; = widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; = -webkit-border-vertical-spacing: 0px; = -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-size: 18px; font-style: normal; font-variant: normal; = font-weight: normal; letter-spacing: normal; line-height: normal; = orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; = widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; = -webkit-border-vertical-spacing: 0px; = -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-size: 18px; font-style: normal; font-variant: normal; = font-weight: normal; letter-spacing: normal; line-height: normal; = orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; = widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; = -webkit-border-vertical-spacing: 0px; = -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-size: 18px; font-style: normal; font-variant: normal; = font-weight: normal; letter-spacing: normal; line-height: normal; = orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; = widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; = -webkit-border-vertical-spacing: 0px; = -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; -webkit-border-horizontal-spacing: = 0px; -webkit-border-vertical-spacing: 0px; color: rgb(0, 0, 0); = font-family: Helvetica; font-size: 18px; font-style: normal; = font-variant: normal; font-weight: normal; letter-spacing: normal; = line-height: normal; -webkit-text-decorations-in-effect: none; = text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; = orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div = style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; = -webkit-line-break: after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; -webkit-border-horizontal-spacing: = 0px; -webkit-border-vertical-spacing: 0px; color: rgb(0, 0, 0); = font-family: Helvetica; font-size: 18px; font-style: normal; = font-variant: normal; font-weight: normal; letter-spacing: normal; = line-height: normal; -webkit-text-decorations-in-effect: none; = text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; = orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><span = class=3D"Apple-style-span" style=3D"border-collapse: separate; = -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: = 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; = font-style: normal; font-variant: normal; font-weight: normal; = letter-spacing: normal; line-height: normal; = -webkit-text-decorations-in-effect: none; text-indent: 0px; = -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; = white-space: normal; widows: 2; word-spacing: 0px; "><span = class=3D"Apple-style-span" style=3D"border-collapse: separate; = -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: = 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; = font-style: normal; font-variant: normal; font-weight: normal; = letter-spacing: normal; line-height: normal; = -webkit-text-decorations-in-effect: none; text-indent: 0px; = -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; = white-space: normal; widows: 2; word-spacing: 0px; "><span = class=3D"Apple-style-span" style=3D"border-collapse: separate; = -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: = 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; = font-style: normal; font-variant: normal; font-weight: normal; = letter-spacing: normal; line-height: normal; = -webkit-text-decorations-in-effect: none; text-indent: 0px; = -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; = white-space: normal; widows: 2; word-spacing: 0px; "><span = class=3D"Apple-style-span" style=3D"border-collapse: separate; = -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: = 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; = font-style: normal; font-variant: normal; font-weight: normal; = letter-spacing: normal; line-height: normal; = -webkit-text-decorations-in-effect: none; text-indent: 0px; = -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; = white-space: normal; widows: 2; word-spacing: 0px; "><span = class=3D"Apple-style-span" style=3D"border-collapse: separate; = -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: = 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; = font-style: normal; font-variant: normal; font-weight: normal; = letter-spacing: normal; line-height: normal; = -webkit-text-decorations-in-effect: none; text-indent: 0px; = -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; = white-space: normal; widows: 2; word-spacing: 0px; "><span = class=3D"Apple-style-span" style=3D"border-collapse: separate; = -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: = 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; = font-style: normal; font-variant: normal; font-weight: normal; = letter-spacing: normal; line-height: normal; = -webkit-text-decorations-in-effect: none; text-indent: 0px; = -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; = white-space: normal; widows: 2; word-spacing: 0px; "><p = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; "><font style=3D"font: normal normal normal = 12px/normal Helvetica; "><font class=3D"Apple-style-span" = face=3D"'Copperplate Gothic Light'" size=3D"4"><span = class=3D"Apple-style-span" style=3D"font-size: 16px; ">Sunil Puria, = PhD</span></font></font></p><p style=3D"margin-top: 0px; margin-right: = 0px; margin-bottom: 0px; margin-left: 0px; "><font style=3D"font: normal = normal normal 12px/normal Helvetica; "><font class=3D"Apple-style-span" = face=3D"'Copperplate Gothic Light'"><font class=3D"Apple-style-span" = size=3D"3"><span class=3D"Apple-style-span" style=3D"font-size: 13px; = "><font class=3D"Apple-style-span" color=3D"#990000">Stanford = University</font></span></font></font></font></p><p style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font = class=3D"Apple-style-span" face=3D"'Copperplate Gothic Light'"><font = class=3D"Apple-style-span" size=3D"3"><span class=3D"Apple-style-span" = style=3D"font-size: 13px; ">Depts. of ME &amp; = OHNS</span></font></font></p><p style=3D"margin-top: 0px; margin-right: = 0px; margin-bottom: 0px; margin-left: 0px; "><font style=3D"font: normal = normal normal 12px/normal Helvetica; "><font class=3D"Apple-style-span" = face=3D"'Copperplate Gothic Light'"><font class=3D"Apple-style-span" = size=3D"3"><span class=3D"Apple-style-span" style=3D"font-size: 13px; = ">OtoBiomechanics Group</span></font></font></font></p><p = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; "><font style=3D"font: normal normal normal = 12px/normal Helvetica; "><font class=3D"Apple-style-span" = color=3D"#000000"><font class=3D"Apple-style-span" face=3D"'Copperplate = Gothic Light'" size=3D"4"><span class=3D"Apple-style-span" = style=3D"font-size: 14px; "><a = href=3D"http://www.stanford.edu/people/puria">http://www.stanford.edu/peop= le/puria</a></span></font></font></font></p><br = class=3D"Apple-interchange-newline"></span></span></span></span></span></s= pan></span></div><div style=3D"word-wrap: break-word; -webkit-nbsp-mode: = space; -webkit-line-break: after-white-space; "><font = class=3D"Apple-style-span" color=3D"#0000CC"><font = class=3D"Apple-style-span" color=3D"#990000"><font = class=3D"Apple-style-span" face=3D"'News Gothic MT'" size=3D"4"><span = class=3D"Apple-style-span" style=3D"font-size: 14px; "><b>5th = International Middle Ear Mechanics in Research and Otology = meeting:</b></span></font><span class=3D"Apple-converted-space"><font = class=3D"Apple-style-span" face=3D"'News Gothic MT'" size=3D"4"><span = class=3D"Apple-style-span" style=3D"font-size: 14px; = "><b>&nbsp;</b></span></font></span></font><font = class=3D"Apple-style-span" color=3D"#000099"><font = class=3D"Apple-style-span" face=3D"'News Gothic MT'" size=3D"4"><span = class=3D"Apple-style-span" style=3D"font-size: 14px; "><b><a = href=3D"http://memro2009.stanford.edu">http://memro2009.stanford.edu</a></= b></span></font></font></font></div></span></div></span></div></span></div= ></span></div></span></div></span></div></span></div></span></div></span><= /div></span></div></span> </div> <br></div></body></html>= --Apple-Mail-300--580828393--


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