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Frequency of forks in epidermal‐ridge minutiae in the finger print
Author(s) -
Okajima M.
Publication year - 1970
Publication title -
american journal of physical anthropology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.146
H-Index - 119
eISSN - 1096-8644
pISSN - 0002-9483
DOI - 10.1002/ajpa.1330320106
Subject(s) - index finger , tuning fork , minutiae , ridge , finger print , numerical digit , dermatoglyphics , little finger , fork (system call) , anatomy , middle finger , biology , thumb , mathematics , computer science , acoustics , arithmetic , physics , artificial intelligence , fingerprint (computing) , genetics , paleontology , fingerprint recognition , vibration , operating system
Abstract The frequency of minutia types was studied in finger prints of 77 males and 82 females. Dermal ridges were clearly printed by a revised method for this purpose. The fork index, which represents the frequency of forks in minutiae, is higher in females for each finger than in males. It differs on each finger, i.e., low on the digit I, high on the digits, III, IV and V, and intermediate on the digit II. The mean of the index for each finger distributes from about 15 to 24. Bilateral difference is not evident. The correlation coefficient between right and left hands ranges from 0.52 to 0.79. Forks appear more frequently in ulnar loops than in whorls. It is revealed that the occurrence of forks differs in dermal regions.