Re: Function of Cochlear Nucleus cell types (Sunil Puria )


Subject: Re: Function of Cochlear Nucleus cell types
From:    Sunil Puria  <puria@xxxxxxxx>
Date:    Mon, 6 Jan 2014 22:23:20 -0800
List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>

--Apple-Mail=_433C2E11-7766-4877-8FFD-1ABF94EE9AAC Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=iso-8859-1 There is a nice article about this by D. Manoussaki, E. K. Dimitriadis, = and R. S. Chadwick. Why the Inner Ear is Snail-Shaped Published March 3, 2006 | Phys. Rev. Focus 17, 8 (2006) | DOI: = 10.1103/PhysRevFocus.17.8 The spiral shape of the cochlea enhances its ability to detect low = frequency sounds. See: http://physics.aps.org/story/v17/st8=20 On Jan 6, 2014, at 3:02 PM, Richard F. Lyon <dicklyon@xxxxxxxx> wrote: > That's an interesting question, too, Randy, but likely not very = related to cochlear nucleus. >=20 > I've gotten a few pointers so far, and requests to share the results. = I'll do that. >=20 > Dick >=20 >=20 >=20 >=20 > On Mon, Jan 6, 2014 at 8:59 AM, Ranjit Randhawa <rsran@xxxxxxxx> = wrote: > In addition I would like to add that the answers should also describe = why the cochlea is shaped like it is. This is to satisfy the old dictum = in biology, "form follows function", which as far as I know has never = been answered. But if it is, maybe a reference could be added. There = seems to be a lot of effort based on the reverse, "function follows = form", and I have been wondering whether that there is any truth in = that? Thanks for bringing this up to start the New Year, looking forward = to the responses. Best regards, > Randy Randhawa Sunil Puria, PhD Stanford University Depts. of ME & OHNS OtoBiomechanics Group http://www.stanford.edu/people/puria --Apple-Mail=_433C2E11-7766-4877-8FFD-1ABF94EE9AAC Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=iso-8859-1 <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html = charset=3Diso-8859-1"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space;"><div>There is a nice article about this by D. = Manoussaki, E. K. Dimitriadis, and R. S. Chadwick.</div><div><div = id=3D"content"> <div id=3D"viewpoint"> <div id=3D"left-container"> <article> <header> <span class=3D"Z3988" = title=3D"ctx_ver=3DZ39.88-2004&amp;rft_val_fmt=3Dinfo:ofi/fmt:kev:mtx:jour= nal&amp;rft_id=3Dinfo:doi/10.1103/PhysRevFocus.17.8&amp;rft.genre=3Darticl= e&amp;rft.atitle=3DWhy%20the%20Inner%20Ear%20is%20Snail-Shaped&amp;rft.dat= e=3D2006&amp;rft.jtitle=3DPhysical%20Review%20Focus&amp;rft.stitle=3DPhys.= %20Rev.%20Focus&amp;rft.volume=3D17&amp;rft.artnum=3D8&amp;rft.aufirst=3DD= on&amp;rft.aulast=3DMonroe"></span> <h1 class=3D"title" style=3D"font-size: 19px;">Why the Inner = Ear is Snail-Shaped</h1> <div class=3D"authors"> </div> <div class=3D"pubinfo"> Published March 3, 2006 &nbsp;|&nbsp; Phys. Rev. Focus <span style=3D"font-weight:bold">17</span>,= 8 (2006) &nbsp;|&nbsp; DOI: 10.1103/PhysRevFocus.17.8 </div><p class=3D"byline">The spiral shape of the cochlea = enhances its ability to detect low frequency = sounds.</p></header></article></div></div></div></div>See: <a = href=3D"http://physics.aps.org/story/v17/st8">http://physics.aps.org/story= /v17/st8</a>&nbsp;<div><br></div><div><br><div><div>On Jan 6, 2014, at = 3:02 PM, Richard F. Lyon &lt;<a = href=3D"mailto:dicklyon@xxxxxxxx">dicklyon@xxxxxxxx</a>&gt; = wrote:</div><br class=3D"Apple-interchange-newline"><blockquote = type=3D"cite"><div dir=3D"ltr"><div><div>That's an interesting question, = too, Randy, but likely not very related to cochlear = nucleus.<br><br></div>I've gotten a few pointers so far, and requests to = share the results.&nbsp; I'll do that.<br> <br></div>Dick<br><br><br></div><div class=3D"gmail_extra"><br><br><div = class=3D"gmail_quote">On Mon, Jan 6, 2014 at 8:59 AM, Ranjit Randhawa = <span dir=3D"ltr">&lt;<a href=3D"mailto:rsran@xxxxxxxx" = target=3D"_blank">rsran@xxxxxxxx</a>&gt;</span> wrote:<br> <blockquote class=3D"gmail_quote" style=3D"margin: 0px 0px 0px 0.8ex; = border-left-width: 1px; border-left-color: rgb(204, 204, 204); = border-left-style: solid; padding-left: 1ex; position: static; z-index: = auto;">In addition I would like to add that the answers should also = describe why the cochlea is shaped like it is. This is to satisfy the = old dictum in biology, "form follows function", which as far as I know = has never been answered. But if it is, maybe a reference could be added. = There seems to be a lot of effort based on the reverse, "function = follows form", and I have been wondering whether that there is any truth = in that? Thanks for bringing this up to start the New Year, looking = forward to the responses. Best regards,<br> Randy Randhawa</blockquote></div></div> </blockquote></div><br><div apple-content-edited=3D"true"> <span class=3D"Apple-style-span" style=3D"border-collapse: separate; = border-spacing: 0px;"><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; 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></span></span></span></span></= span></span></span></div></span></div></span></div></span></div></span></d= iv></span></div></span></div></span></div></span></div></span></div></span= ></div></span></div></span></span> </div> <br></div></body></html>= --Apple-Mail=_433C2E11-7766-4877-8FFD-1ABF94EE9AAC--


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