Re: Pitch orientation-discriminating feature detectors?

[Laurent Demany <Laurent.Demany@xxxxxxxxxxxxxxxxxxxx>]

Dear Al and Pierre,

Al wrote:
On what scale were the frequency excursions? If it was a
log-frequency scale, as I suspect it was, it is possible that the
difference would disappear or be reversed if you swept up and
down on a linear scale. What is the justification for the scale
that you actually did use for the excursions?

Answer:
In all these experiments on FM perception, the ascending and descending 
glides were indeed symmetric on a LOG-frequency scale. It was decided to do 
so simply because the auditory scale of frequency is more similar to a log 
scale than to a linear scale. Using a linear scale rather than a log scale, 
what one would logically expect to find is a LARGER --rather than smaller-- 
perceptual asymmetry between frequency peaks and troughs.

Pierre wrote:
Stay away from citing articles published in the Journal of Auditory
Research -- that "cabbage leaf"

Comment:
That's a bit harsh! Sometimes good papers are published in bad journals and 
vice versa. As a matter of fact, the Rupp paper quoted by Daniel is very 
interesting.



Laurent Demany
Laboratoire de Neurophysiologie, UMR CNRS 5543,
BP 63, Université Victor Segalen - Bordeaux 2,
146 rue Leo Saignat, F-33076 Bordeaux Cedex, France
Tel : (33) 5 5757 1651 or (33) 5 5757 1551
Fax : (33) 5 5699 0380
email : Laurent.Demany@psyac.u-bordeaux2.fr
http://www.sm.u-bordeaux2.fr/~psyac/