5.1- How Do We Sense and Perceive the World Around Us?, 5.2 Detection requires a certain amount of the stimulus, 5.3- The brain constructs a stable representation of the world from five senses...
1.1 Physical, emotional and social health, fitness and well-being, 1.2 The consequences of a sedentary lifestyle, 1.3 Energy use, diet, nutrition and hydration...