Thoracic and abdominal movements associated with production of the alarm trill of the Uinta Squirrel (Citellus armatus) were followed by impedence pneumography. The alarm is a trill approximately 22 pulses per second, apparently resulting from synchromesh pulsation of the thorax. Interpretation of respiration flow patterns will be continued by means of whole-body plethysmography. Project Number 161.
Calder, William A.
"Studies in Respiratory Physiology: Respiratory Aspects of Vocalization,"
Jackson Hole Research Station Annual Report: Vol. 1970
, Article 5.
Available at: http://repository.uwyo.edu/jhrs_reports/vol1970/iss1/5