نتایج جستجو برای: human reaction time
تعداد نتایج: 3593454 فیلتر نتایج به سال:
Background: Pregnancy is a phenomenon that antigens of semi allogenic fetus are in direct contact with mother's immune system. Immune dysregulation can cause fetus rejection by mother's immune system responses. Human leukocyte antigen-G1, as an immunotolerant molecule has a major role to induce tolerance during pregnancy by suppression of natural killer cells through inhibitor receptors on thes...
ackground: knowing the human platelet antigens (hpa) and genes frequency in different populations is important not only for population studies but also for clinical transfusion practice. hpa genes frequency in iran is not evaluated, so we investigated the hpa-2, hpa-3, and hpa-5 frequency and their polymorphism. materials and methods: dna from 120 iranians (99 iranian blood donors and 21 patien...
Athletes who spend more time planning and executing plays can anticipate the outcome of their reactions quickly accurately, thus increasing likelihood effective plays. Video stimuli that replicate real sports have been used to study players’ toward in various sports. However, low frame rates video previous studies resulted errors when measuring reaction time. Further, a display delay occurs exp...
Objectives: Physical activities ameliorate elderly motor and cognitive performance. The aim of this research is to study the effect of sport and physical activity on elderly reaction time and response time. Methods & Materials: The research method is causal-comparative and its statistical population consists of 60 active and non-active old males over 60 years residing at Mahabad city. Reacti...
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