Calibration Of Accelerometer Using An Optoelectronic Transducer

1991 ◽  
Vol 20 (1) ◽  
pp. 42-44
Author(s):  
V. T. Chitnis ◽  
Ram Narain ◽  
V. Mohanan
2009 ◽  
Vol 80 (9) ◽  
pp. 094701 ◽  
Author(s):  
Adam Szcześniak ◽  
Zbigniew Szcześniak

1980 ◽  
Vol 239 (3) ◽  
pp. R326-R331
Author(s):  
S. A. Halbert ◽  
R. J. Bourdage ◽  
J. L. Boling ◽  
J. A. Ringo ◽  
R. J. Blandau

An optoelectronic instrument to record oviductal muscular activity in chronically instrumented animals was evaluated in in vitro and in vivo experiments. The intensity of red light transmitted through the oviduct was modulated by contractions of the oviductal wall producing an optical analog of the mechanical events. Accuracy of the analog was tested by Fourier analysis of signals from mechanical and optoelectronic transducers placed at the same site on the oviduct; the results validated the use of the optical device as a contraction event sensor. Contractions of the tubal mesenteries had less effect on the optical signal than on signals from extraluminal mechanical transducers. Optical and photographic recordings of luminal transport in exposed oviducts showed a correspondence of intraluminal movements to events in the optical contraction signal. This instrument does not alter tubal function, and thus it is an especially useful experimental tool to investigate the role of oviductal muscular activity in fertility.


1990 ◽  
Vol 33 (4) ◽  
pp. 300-304
Author(s):  
Ya. M. Otchik ◽  
K. V. Martirosyan ◽  
M. F. Skvortsov ◽  
A. V. Trofimov

2010 ◽  
Vol 26 (4) ◽  
pp. 1528-1535 ◽  
Author(s):  
Konstantinos Misiakos ◽  
Panagiota S. Petrou ◽  
Sotirios E. Kakabakos ◽  
Drakoulis Yannoukakos ◽  
Harry Contopanagos ◽  
...  

2004 ◽  
Vol 76 (5) ◽  
pp. 1366-1373 ◽  
Author(s):  
Konstantinos Misiakos ◽  
Sotirios E. Kakabakos ◽  
Panagiota S. Petrou ◽  
Hans H. Ruf

1980 ◽  
Vol 239 (3) ◽  
pp. R332-R336 ◽  
Author(s):  
R. J. Bourdage ◽  
S. A. Halbert

Muscular activity of the oviductal isthmus was recorded in intact awake rabbits with an extraluminal optoelectronic transducer. Telemetered data were collected continuously during the periovulatory period to relate changes in contraction frequency to oviductal transport function. Mean frequencies during estrus ranged from 11.7 to 18.7 contractions/min. Animals stimulated to ovulate either by luteinizing hormone (LH) or by mating showed equivalent responses. Within 2 h following the stimulus, the frequency increased rapidly and remained elevated more than 50% above the estrous control level for approximately 10 h. Thereafter, the frequency declined slowly to reach a second plateau, 30% below the control level, which was maintained throughout the 2nd and 3rd poststimulus days. Subsequently, the activity returned to the prestimulus level. The periods of elevated and depressed activity correspond closely in time to the periods of rapid preovulatory transport of sperm and slow postovulatory transport of ova through the isthmus, suggesting the possibility of regulation of gamete transport by the oviductal musculature.


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