Computer application to cardiovascular disease

Townsend, Charles L.

doi:10.31274/rtd-180813-17510

Cited by 3 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In comparison with results of others, the results of this investigation indicate an improvement over the results obtained by Townsend (9) in both the range of heart rates applicable and also in the overall accuracy of screening abnor mal waveforms from normal waveforms. The results of the correlation technique described in this investigation also appear to be (in the opinion of the investigator) as good asor better than-the results of a study conducted at Iowa Methodist Hospital in Des Moines (which performed an electro cardiogram interpretation from pulse-amplitude and timeduration parameters) if both techniques are given the same input lead system.…”

Section: Automation Of This Proceduressupporting

confidence: 58%

“…Townsend (9) in his correlation studies first linearly time-normalized the entire RR interval but found that when the heart rate of the test waveform deviated very far from the heart rate of his standard waveform, troubles developed. He later corrected for these non-linearities in test waveform heart rates varying appreciably from his standard waveform heart rate of 75 beats per minute.…”

Section: What Is To Be Correlatedmentioning

confidence: 99%

See 1 more Smart Citation

Electrocardiogram interpretation using correlation techniques

Balm

View full text Add to dashboard Cite

Section: Automation Of This Proceduressupporting

confidence: 58%

Section: What Is To Be Correlatedmentioning

confidence: 99%

Electrocardiogram interpretation using correlation techniques

Balm

View full text Add to dashboard Cite

“…Since the ventricles constitute the major portion of the muscular mass of the heart, they are correspondingly respon Townsend (9) in his correlation studies first linearly time-normalized the entire RR interval but found that when the heart rate of the test waveform deviated very far from the heart rate of his standard waveform, troubles developed. He later corrected for these non-linearities in test waveform heart rates varying appreciably from his standard waveform heart rate of 75 beats per minute.…”

Section: Autocorrelation and Crosscorrelation Function Equationsmentioning

confidence: 99%

Electrocardiogram interpretation using correlation techniques

Balm

View full text Add to dashboard Cite

Response of the adult European corn borer (Ostrinia nubilalis) to 0.3-15 micron radiation as indicated by respiration rate

Turner

View full text Add to dashboard Cite

He concluded that two receptor types were present that responded maximally to UV or green light. Violet adapting lowered sensitivity very little for any wavelength. Callahan (35) has measured an action potential at the junction of the main antennal nerve and deutocerebrum of the brain of the cecropia moth, Hyalophora cecropia, as the eye was irradiated with visible light. Response was also obtained using coherent red light from a ruby laser. An action potential was obtained also from the scape dome sensor irradiated with monochromatic yellow-green light. An interesting aspect is suggested by visual threshold studies with humans where the thresholds of the electrical signal and perception differ (161). Perception may occur before the action potential (139). The same may be true in insects. Generally the compound eyes and ocelli constitute the photosensitive parts of the insect. It has been shown with a species of aphid, however, that light appears to act on receptors likely located in the dorsum of the brain. The photoperiodic processes persisted even with the eyes covered (122). Laboratory studies, IR Experimentation with insect response to IR radiation is relatively recent. No record of such studies on the corn borer has been located. Sparks (147) used IR photography to observe the flight, feeding, and mating habits of corn borers in the laboratory. The insects did not show apparent disturbance by the IR source. Referring again to the studies of Levengood and associates (101, 105, 107), a number of aspects of IR sensing have been explored. A Kanthal wire source, at temperatures of 100° and 120° C., failed to cause response with the fall armyworm. Similarly, the 0.85 micron output of a gallium arsenide diode emitter, pulsed at frequencies from 1,200 to 12,000 Hz, caused no response by the fall armyworm or corn earworm adults (101). A significant finding has occurred with the Indian-meal moth, Plodia interpunctella.

show abstract

Computer application to cardiovascular disease

Cited by 3 publications

References 4 publications

Electrocardiogram interpretation using correlation techniques

Electrocardiogram interpretation using correlation techniques

Electrocardiogram interpretation using correlation techniques

Response of the adult European corn borer (Ostrinia nubilalis) to 0.3-15 micron radiation as indicated by respiration rate

Contact Info

Product

Resources

About