Chapter 3
REACTIONS OF DIFFERENT LEVELS 45
Different Sorts of Stimuli 47
The Motor Centers, Lower and Higher 49
How the Brain Produces Muscular Movements 53
Facilitation and Inhibition 54
Super-motor Centers in the Cortex 56
Speech Centers 57
The Auditory Centers 59
The Visual Centers 62
Cortical Centers for the Other Senses 68
Lower Sensory Centers 64
The Cerebellum 66
Different Levels of Reaction 65
Exercises 67
References 67