Neonatal Electrocardiographic Responses to Sound: Methodology

Contributions of twin research to psychology.

“…Newer techniques of instrumentation promise to make the analysis of data from such studies less time consuming and tedious. Such work seems especially promising since Lipton, Steinschneider, and Richmond (1960), Lipton (1961), Beadle andCrowell (1962), Crowell, Davis, Chun, andSpellacy (1965), and several other investigators have shown that autonomic nervous system (ANS) reactions can be measured in neonates. Lipton et al also reported that identical twins have highly similar reactions at that age.…”

Chronological events in neonatal auditory screening - review

“…At 22 weeks a vertical Bartoshuk elicited cardiac acceleration in response to intense auditory signal. Beadle and Crowell in 1962 reported changes in pulse rate in one normal neonate following auditory stimulation, but with no consistent correlation of acceleration or de-acceleration with either frequency or intensity change. Bartoshuk obtained larger increases in heart rate for stimuli of successfully greater intensity.…”

“…Efforts to evaluate auditory functions in human neonate span, a 50 years period and encompass a variety of approaches, ranging from kymographic records of responses to uncalibrated stimuli to clinical screening with carefully calibrated stimuli and electrocardiographic measurements. [1][2][3][4]…”

Better Hearing Tests in Children: Physiological Bases of Objective Tests

“…One can count the heart beats of a subject who is free to move with the aid of a miniature electronic cardiatachometer (Ryan 1960). Electrocardiography has been also used for hearing tests (Beadle and Crowell 1962). A pulse meter, with a transducer consisting of a button carbon microphone strapped to the forefinger, can be used (Hon 1960).…”