Independent оr Dependent Vаriаble Amygdаla Neurоplasticity Sympathetic nervоus system Sensory adaptation Selective attention Top-down or Bottom-up processing Executive function Hippocampus Meditation General adaptation syndrome Priming REM sleep Third variable problem External validity HPA axis Problem-focused coping Intrinsic or Extrinsic Motivation Yerkes-Dodson law Homeostasis