Re: looking for a control task /spectro-temporal processing (Leon van Noorden )

Subject: Re: looking for a control task /spectro-temporal processing From: Leon van Noorden <leonvannoorden@xxxxxxxx> Date: Tue, 28 Mar 2006 11:30:59 +0200 This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C6525B.168ABB10 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Dear Nadine, The choice of your control task should depend on which step of the perception chain you want to control. I always found a large influence on the possibility to go back in your 'echoic' memory when using such short stimuli as you propose. A way to control the echoic memeory is to embed your short stimulus in a much longer one of similar tones. If you want to control the stage in which you recognise the pattern you should embed the sequence in similar patterns. What is your intention with the control signal? Regards, Leon van Noorden -----Original Message----- From: AUDITORY Research in Auditory Perception [mailto:AUDITORY@xxxxxxxx On Behalf Of Nadine Gaab Sent: maandag 27 maart 2006 22:37 To: AUDITORY@xxxxxxxx Subject: looking for a control task /spectro-temporal processing Hello list! We are designing an experiment that examines auditory spectro-temporal processing: "Subjects will listen to three-tone sequences comprised of two complex tones and will be asked to reproduce the order of the tones manually. Tones will have a frequency of either 100Hz or 300Hz. The Inter-Stimulus-Interval (ISI) between the three tones will vary in several steps (e.g. 5ms, 20ms, 50ms and 300ms). We are looking for a control task that does not involve auditory temporal processing but it should still be an auditory task and it should not produce ceiling effects. We thought about amplitude/intensity discrimination with a very long ISI or environmental sound categorization..any other thoughts or comments? Thanks a lot Nadine -- "If we knew what it was we were doing, it would not be called research, would it?" A. Einstein (1879-1955) Nadine Gaab, PhD Postdoctoral Associate Department of Brain and Cognitive Sciences Massachusetts Institute of Technology 77 Massachusetts Avenue Room NE46-4037C Cambridge, MA 02139 phone: (617)-253-3415 email: gaab@xxxxxxxx http://web.mit.edu/gabrieli-lab/people/gaab.htm <http://web.mit.edu/bcs/> ------=_NextPart_000_0008_01C6525B.168ABB10 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html xmlns:ns0=3D"urn:schemas-microsoft-com:office:smarttags"> <head> <META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; = charset=3Dus-ascii"> <meta name=3DGenerator content=3D"Microsoft Word 10 (filtered)"> <style>  </style> </head> <body lang=3DEN-GB link=3Dblue vlink=3Dpurple> <div class=3DSection1> Dear Nadine,   The choice of your control task = should depend on which step of the perception chain you want to = control. I always found a large influence on = the possibility to go back in your ‘echoic’ memory when using = such short stimuli as you propose. A way to control the echoic memeory is to = embed your short stimulus in a much longer one of similar = tones. If you want to control the stage in = which you recognise the pattern you should embed the sequence in similar = patterns.   What is your intention with the = control signal?   Regards, Leon van Noorden   -----Original Message----- From: AUDITORY Research = in Auditory Perception [mailto:AUDITORY@xxxxxxxx On Behalf Of Nadine Gaab Sent: maandag 27 maart = 2006 22:37 To: = AUDITORY@xxxxxxxx Subject: looking for a = control task /spectro-temporal processing   Hello list! We are designing an experiment that examines auditory = spectro-temporal processing: “Subjects will listen to three-tone sequences comprised of = two complex tones and will be asked to reproduce the order of the tones = manually. Tones will have a frequency of either 100Hz or 300Hz. The Inter-Stimulus-Interval (ISI) between the three tones will vary in = several steps (e.g. 5ms, 20ms, 50ms and 300ms). We are looking for a control task that does not involve auditory temporal processing but it should still be an auditory task and it should not = produce ceiling effects. We thought about amplitude/intensity discrimination with a very long ISI or environmental sound categorization….any other thoughts or = comments? Thanks a lot Nadine -- "If we knew what it was we = were doing, it would not be called research, would it?"   A. Einstein (1879-1955) Nadine Gaab, PhD Postdoctoral Associate Department of Brain and Cognitive Sciences Massachusetts Institute of Technology <ns0:Street w:insAuthor=3D"Nadine Gaab" = w:insDate=3D"2006-03-27T15:26:00Z" w:endInsAuthor=3D"Nadine Gaab" = w:endInsDate=3D"2006-03-27T15:26:00Z"><ns0:address w:insAuthor=3D"Nadine = Gaab" w:insDate=3D"2006-03-27T15:26:00Z" w:endInsAuthor=3D"Nadine Gaab" = w:endInsDate=3D"2006-03-27T15:26:00Z">77 Massachusetts Avenue</ns0:address></ns0:Street> Room NE46-4037C <ns0:place w:insAuthor=3D"Nadine Gaab" = w:insDate=3D"2006-03-27T15:26:00Z" w:endInsAuthor=3D"Nadine Gaab" = w:endInsDate=3D"2006-03-27T15:26:00Z"><ns0:City w:insAuthor=3D"Nadine = Gaab" w:insDate=3D"2006-03-27T15:26:00Z" w:endInsAuthor=3D"Nadine Gaab" = w:endInsDate=3D"2006-03-27T15:26:00Z">Cambridge</ns0:City></ns0:place>, <ns0:State w:insAuthor=3D"Nadine Gaab" = w:insDate=3D"2006-03-27T15:26:00Z" w:endInsAuthor=3D"Nadine Gaab" = w:endInsDate=3D"2006-03-27T15:26:00Z">MA</ns0:State> <ns0:PostalCode w:insAuthor=3D"Nadine Gaab" = w:insDate=3D"2006-03-27T15:26:00Z" w:endInsAuthor=3D"Nadine Gaab" = w:endInsDate=3D"2006-03-27T15:26:00Z">02139</ns0:PostalCode> phone: (617)-253-3415 email: <a href=3D"mailto:gaab@xxxxxxxx">gaab@xxxxxxxx</a> <a = href=3D"http://web.mit.edu/gabrieli-lab/people/gaab.htm">http://web.mit.e= du/gabrieli-lab/people/gaab.htm</a> <a = href=3D"http://web.mit.edu/bcs/"></a>   </div> </body> </html> ------=_NextPart_000_0008_01C6525B.168ABB10--

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