Neural and mechanical mechanisms of feline purring

7n7is · 12th March 2008, 10:45 PM

Can anyone get a copy of this article?

Neural and mechanical mechanisms of feline purring
J. E. Remmers and H. Gautier
Respiration Physiology
Volume 16, Issue 3, December 1972, Pages 351-361
http://tinyurl.com/ypmd4m

Neural and mechanical mechanisms of feline purring*1

J. E. Remmers2 and H. Gautier3
Department of Physiology, Dartmouth Medical School, Hanover, New Hampshire, U.S.A.
Accepted 13 July 1972. ; Available online 10 January 2003.

Abstract
Purring results from the intermittent activation of intrinsic laryngeal muscles as manifest by a very regular, stereotyped pattern of EMG bursts occurring 20–30 times per second. Each burst of muscle discharge causes glottal closure and the development of a trans-glottal pressure which, when dissipated by glottal opening, generates sound. During inspiration, the diaphragmatic discharge is also chopped, and the diaphragmatic and laryngeal bursts occur dissynchronously. This alternating activation of the two muscles serves to limit the negative swings in tracheal pressure and promotes inspiratory flow during the period of minimal glottal resistance.

Interruption of the afferent pathways for a variety of respiratory mechanoreceptors failed to eliminate the neural oscillation characteristic of purring, suggesting the existence of a high frequency oscillatory mechanism within the central nervous system.

pinkmouse · 12th March 2008, 10:50 PM

Quote:

Originally posted by 7n7is
...Interruption of the afferent pathways for a variety of respiratory mechanoreceptors failed to eliminate the neural oscillation characteristic of purring...

Hmm, let's all vivisect kittens.

abzug · 13th March 2008, 12:00 PM

Cats are probably the most frequently used animals in nerological research.

okapi · 14th March 2008, 02:06 PM

email me and i'll send you the article.

i think i met the first author. when i met him he was a prof. at the university of calgary - a nice guy.

also, the use of cats in neurological research is relatively rare compared to mice and rats - sorry pinkmouse.

DigitalJunkie · 15th March 2008, 07:22 AM

Quote:

Originally posted by okapi
email me and i'll send you the article.

i think i met the first author. when i met him he was a prof. at the university of calgary - a nice guy.

also, the use of cats in neurological research is relatively rare compared to mice and rats - sorry pinkmouse.

Is that why PM is pink?

7n7is · 5th April 2008, 12:54 AM

http://gypu.net/wp-content/uploads/mouseparty.swf

KBK · 5th April 2008, 04:11 AM

Quote:

Originally posted by 7n7is
http://gypu.net/wp-content/uploads/mouseparty.swf

That's quite funny stuff..and quite informative.

okapi · 5th April 2008, 04:34 AM

that is a good link.

i emailed it to a buddy of mine who's in the field. i'm curious to see what he has to say.

7n7is · 6th April 2008, 12:44 AM

?

12th March 2008, 10:45 PM	#1
7n7is diyAudio Member Join Date: Mar 2006 Location: VA	Neural and mechanical mechanisms of feline purring Can anyone get a copy of this article? Neural and mechanical mechanisms of feline purring J. E. Remmers and H. Gautier Respiration Physiology Volume 16, Issue 3, December 1972, Pages 351-361 http://tinyurl.com/ypmd4m Neural and mechanical mechanisms of feline purring*1 J. E. Remmers2 and H. Gautier3 Department of Physiology, Dartmouth Medical School, Hanover, New Hampshire, U.S.A. Accepted 13 July 1972. ; Available online 10 January 2003. Abstract Purring results from the intermittent activation of intrinsic laryngeal muscles as manifest by a very regular, stereotyped pattern of EMG bursts occurring 20–30 times per second. Each burst of muscle discharge causes glottal closure and the development of a trans-glottal pressure which, when dissipated by glottal opening, generates sound. During inspiration, the diaphragmatic discharge is also chopped, and the diaphragmatic and laryngeal bursts occur dissynchronously. This alternating activation of the two muscles serves to limit the negative swings in tracheal pressure and promotes inspiratory flow during the period of minimal glottal resistance. Interruption of the afferent pathways for a variety of respiratory mechanoreceptors failed to eliminate the neural oscillation characteristic of purring, suggesting the existence of a high frequency oscillatory mechanism within the central nervous system.

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13th March 2008, 12:00 PM	#3
abzug Account Disabled Join Date: Jan 2006 Location: whereisit	Cats are probably the most frequently used animals in nerological research.

14th March 2008, 02:06 PM	#4
okapi diyAudio Member Join Date: Aug 2004 Location: Buffalo	email me and i'll send you the article. i think i met the first author. when i met him he was a prof. at the university of calgary - a nice guy. also, the use of cats in neurological research is relatively rare compared to mice and rats - sorry pinkmouse.

5th April 2008, 12:54 AM	#6
7n7is diyAudio Member Join Date: Mar 2006 Location: VA	http://gypu.net/wp-content/uploads/mouseparty.swf

5th April 2008, 04:34 AM	#8
okapi diyAudio Member Join Date: Aug 2004 Location: Buffalo	that is a good link. i emailed it to a buddy of mine who's in the field. i'm curious to see what he has to say.

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