Subject: Human OAEs. From: "reinifrosch@xxxxxxxx" <reinifrosch@xxxxxxxx> Date: Mon, 22 Oct 2012 12:42:33 +0000 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>------=_Part_2442_17465320.1350909753396 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Dear colleagues, The various forms of human otoacoustic emissions (OAEs) appear to agree with the hypothesis that the main OAE sources are active outer hair cells; the OAE properties can be predicted with the help of cochlear maps, i.e., of certain functions x(f), where f is the frequency of a tone and x is a related distance from the cochlear base, measured along the cochlear channel. At Forum Acusticum 2011 in Aalborg, Sarah Verhulst (then at the Technical University of Denmark) presented experimental wave forms of human TBOAEs (tone-burst-evoked OAEs) that differed appreciably from the click-evoked OAEs which I had analysed earlier. These TBOAE wave forms, however, can be shown to be compatible with the above-mentioned cochlear-map-based predictions, too. At the recent CAA meeting at Banff I presented two talks on those subjects. The corresponding two-page proceedings papers have already appeared in the journal Canadian Acoustics: 1) R.F., "Human Cochlear Maps", Canadian Acoustics, Vol. 40 No.3 (2012) 114-115; 2) R.F., "Analysis of Human Tone-Burst-Evoked Otoacoustic Emissions", Canadian Acoustics Vol. 40 No. 3 (2012) 116-117. Reinhart Frosch, Dr. phil. nat., CH-5200 Brugg. reinifrosch@xxxxxxxx . ------=_Part_2442_17465320.1350909753396 Content-Type: text/html;charset="UTF-8" Content-Transfer-Encoding: quoted-printable <html><head><style type=3D'text/css'> <!-- div.bwmail { background-color:#ffffff; font-family: Trebuchet MS,Arial,Helv= etica, sans-serif; font-size: small; margin:0; padding:0;} div.bwmail p { margin:0; padding:0; } div.bwmail table { font-family: Trebuchet MS,Arial,Helvetica, sans-serif; f= ont-size: small; } div.bwmail li { margin:0; padding:0; } --> </style> </head><body><div class=3D'bwmail'><P><FONT size=3D2>Dear colleagues,<BR>Th= e various forms of human otoacoustic emissions (OAEs) appear to agree with = the hypothesis that the main OAE sources are active outer hair cells; the O= AE properties can be predicted with the help of cochlear maps, i.e., of cer= tain functions x(f), where f is the frequency of a tone and x is a related&= nbsp;distance from the cochlear base, measured along the cochlear channel. = At Forum Acusticum 2011 in Aalborg, Sarah Verhulst (then at the Techni= cal University of Denmark) presented experimental wave forms of human TBOAE= s (tone-burst-evoked OAEs) that differed appreciably from the click-evoked&= nbsp;OAEs which I had analysed earlier. These TBOAE wave forms, howeve= r, can be shown to be compatible with the above-mentioned cochlear-map= -based predictions, too. At the recent CAA meeting at Banff I presented two= talks on those subjects. The corresponding two-page proceedings papers&nbs= p;have already appeared in the journal Canadian Acoustics:</FONT></P> <P><FONT size=3D2>1) R.F., "Human Cochlear Maps", Canadian Acoustics, Vol. = 40 No.3 (2012) 114-115;</FONT></P> <P><FONT size=3D2>2) R.F., "Analysis of Human Tone-Burst-Evoked Otoacoustic= Emissions", Canadian Acoustics Vol. 40 No. 3 (2012) 116-117. </= FONT></P> <P><FONT size=3D2>Reinhart Frosch,<BR>Dr. phil. nat.,<BR>CH-5200 Brugg.<BR>= reinifrosch@xxxxxxxx .</FONT> </P></div></body></html> ------=_Part_2442_17465320.1350909753396--