Start a New Career in the Medical Field with the American Red Cross CNA (Certified Nurse Assistant) Training Program. Imagine a job that rewards you for caring about othersâ¦that is exciting and challengingâ¦a job where you make a difference. Whether youâre just starting your career or ready for a change, now is the time to consider becoming a Nurse Assistant. In most states a Nurse Assistant is referred to as a (CNA). As a CNA, you will be an important part of todayâs world of health care, with knowledge and skills that are always in demand.
From Wikipedia, the free encyclopedia. Psycho-physiological interaction (PPI) is a functional brain imaging analysis method. It estimates context-specific changes in effective connectivity (coupling) between a region of interest (seed) and other brain regions.
In statistics, an interaction is a term in a statistical model in which the effect of two, or more, variables is not simply additive. An example from statistics applied to health science If we were examining the effect of two variables, gender and premature birth, on health outcomes, we would describe any difference in health outcome scores between genders as a main effect.