Haim Friedman

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Photoplethysmography (PPG) measures the cardiac-induced fluctuations and other changes in tissue blood volume by light transmission measurement. In the current study, light transmission was simultaneously measured in the two index fingers of healthy subjects, while the brachial artery in the left arm was occluded by a pressure cuff, so that no PPG signal(More)
The genogram, or family diagram, is an assessment tool widely used by clinicians to study family members and their relationships over several generations. The standard genogram format is limited, however, because it does not show temporal patterns directly. An alternative, the Time-Line Genogram (TLG), which plots time on the vertical axis to display life(More)
In Experiment 1, female Betta given daily injections of testosterone (T) for 9 weeks acquired anatomical features characteristic of males as indicated by changes in fin length, body coloration, and gonadal morphology. These findings suggested that a potential for sex reversal exists in females of this species. In Experiment 2 we measured changes in(More)
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