Subject: The climb of absolute pitch From: Pierre Divenyi <pdivenyi@xxxxxxxx> Date: Sat, 1 Dec 2012 09:50:49 -0800 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>> This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3437200253_9141015 Content-type: text/plain; charset="US-ASCII" Content-transfer-encoding: 7bit Hi Oded, Your three-step reasoning makes sense but, indeed, it should be experimentally verified. As to the age-related change of neural oscillations, Art Wingfield believes that the brain "slows down" as we get older. Such a slowing-down could also explain the upward AP shift because our reference would shift downward. How this central effect squares with the peripheral, BM-stiffening effect is unknown but, again, could be studied in the lab. -Pierre On 12/1/12 5:17 AM, "Oded Ghitza" <oghitza@xxxxxxxx> wrote: Hi Pierre, If (1) you accept Julius's model of pitch perception, (2) interpret -- as he did -- the central component of the model as a mechanism that adjusts f0 of an internal harmonic sieve to the point where the MMSE between the sieve and the input pattern is minimum, and (3) assume that such mechanism is realized by a neuronal circuitry with oscillations ("rhythms") at the core (maybe related to Langer, in the late 80's and in the context of pitch perception, who measured "temporal rings" in chicks); then, a possible way to examine the phenomenon (whether perceived pitch should go up or down, in particular), is to look at how the frequency range of neuronal oscillations change with age. -- Oded. --B_3437200253_9141015 Content-type: text/html; charset="US-ASCII" Content-transfer-encoding: quoted-printable <html><head></head><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: s= pace; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size:= 14px; font-family: Calibri, sans-serif; "><div>Hi Oded,</div><div><br></div= ><div>Your three-step reasoning makes sense but, indeed, it should be experi= mentally verified. As to the age-related change of neural oscillations, Art = Wingfield believes that the brain "slows down" as we get older. Such a slowi= ng-down could also explain the upward AP shift because our reference would s= hift downward. How this central effect squares with the peripheral, BM-stiff= ening effect is unknown but, again, could be studied in the lab.</div><div><= br></div><div>-Pierre</div><div><br></div><span id=3D"OLK_SRC_BODY_SECTION"><d= iv><div>On 12/1/12 5:17 AM, "Oded Ghitza" <<a href=3D"mailto:oghitza@xxxxxxxx= ">oghitza@xxxxxxxx</a>> wrote:</div></div><div><br></div>Hi Pierre,<div>If = (1) you accept Julius's model of pitch perception, (2) interpret -- as he di= d -- the central component of the model as a mechanism that adjusts f0 of an= internal harmonic sieve to the point where the MMSE between the sieve and t= he input pattern is minimum, and (3) assume that such mechanism is realized = by a neuronal circuitry with oscillations ("rhythms") at the core (maybe rel= ated to Langer, in the late 80's and in the context of pitch perception= , who measured "temporal rings" in chicks); then, a possible way to examine = the phenomenon (whether perceived pitch should go up or down, in particular)= , is to look at how the frequency range of neuronal oscillations change with= age. </div><div><div dir=3D"ltr">--</div><div dir=3D"ltr">Oded.</div><br><= br><br><div class=3D"gmail_quote"><br></div></div></span></body></html> --B_3437200253_9141015--