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Heart Rate Changes in the Horse to Human Contact
Author(s) -
Lynch James J.,
Frederick Fregin G.,
Mackie James B.,
Monroe Russell R.
Publication year - 1974
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.1974.tb00575.x
Subject(s) - heart rate , horse , psychology , social contact , psychosocial , shock (circulatory) , human heart , cardiology , developmental psychology , medicine , psychiatry , blood pressure , paleontology , biology
The effects of human social contact on the electrocardiogram (EKG) and general behavior of 2 horses were explored. Petting elicited a slowing of heart rate, while a person entering and exiting elicited transient, but often marked heart rate increases. In both horses transient periods of T wave inversion occurred in the EKG during human contact. In one of the horses the frequency of dropped heart beats increased dramatically during successive trials of human petting. In this horse a total of 29 dropped heart beats were observed of which 23 occurred while a person was with the horse, although this contact occupied only 15 percent of the total observation period. These findings parallel previous observations made with dogs. Similar observations of changes in the heart rate and rhythm of patients in coronary care units and a shock‐trauma unit during social contact with other humans underscore the need to develop empirical analogues of these reactions. The horse appears to offer an ideal model for understanding the psychosocial, hemodynamic, and central nervous system mechanisms involved in these reactions.