CONTENTS xxiii 



CHAPTEE XCV 



PAGE 



THE MOTOR AREAS OF THE CEREBRUM AND THE EFFERENT PATHWAY TO SKELETAL 



MUSCLE 884 



The Motor Area of the Cerebral Cortex, 885; The Visuo-Motor Areas, 886; 

 The Efferent Pathway in the Brain and Cord, 888; Distribution of Efferent 

 Nerves, 890; Spinal Reflexes, 891. 



CHAPTER XCVI 



THE AUTONOMIC NERVOUS SYSTEM, OR THE EFFERENT P'ATHWAY TO SMOOTH MUS- 

 CLES AND GLANDS 893 



The Organization of Efferent Nerves to the Viscera, 893; The Double Inner- 

 vation of the Visceral Organs, 896; The Function of the Autonomic Nervous 

 System, 897; The Axon Reflex, 898; Function of the Bulbo-sacral Divisions, 

 899 ; The Mechanism for Emptying the Bladder, 900 ; Function of the Thorac- 

 ico-Lumbar Division, 901 ; Effects of Impulses from the Viscera Upon Central 

 Nervous Activity, 902. 



CHAPTER XCVII 



MUSCULAR CONTRACTION 904 



The Tonic Contraction of Skeletal Muscle, 905; Tetanic Contraction of 

 Skeletal Muscle, 906; The All or None Law, 908; Chemistry of Tetanic Con- 

 traction, 910; Smooth Muscle, 912. 



CHAPTER XCVIII 

 POSTURAL COORDINATION 914 



Reflex Adjustment of Tone, 914; The Posture of the Body as a Whole, 917; 

 Compensatory Movements of the Eyes, 918; Clinical Tests of Labyrinthine 

 Mechanism, 920; The Tendon Jerks, 921. 



CHAPTER XCIX 



THE CENTRAL CONTROL OF POSTURAL REACTIONS; THE CEREBELLUM 924 



The Influence of the Brain on the Local Tonic Reflex, 924; Function of the 

 Cerebellum, 926; Localization of Function in the Cerebellum, 929; 'Compensa- 

 tion for Cerebellar Injuries, 931. 



CHAPTER 



THE INTEGRATION OF ACTION WITHIN THE REFLEX ARC 933 



The Receptors, 933; Summation, 934; Refractory Period, 934; Reciprocal 

 Inhibition, 937; Action of Strychnine and Tetanus Toxin on Reciprocal In- 

 hibition, 941; The Reflex Figure, 941; Rules for the Spread of Spinal Re- 

 flexes, 944. 



CHAPTER CI 



THE INTEGRATION OF SIMULTANEOUS AND SUCCESSIVE REFLEXES 945 



Principle of the Final Common Path, 945; Integration of Allied Reflexes, 

 946; Integration of Antagonistic Reflexes, 947. 



CHAPTER CII 



THE INTEGRATIVE ACTION OF THE CEREBRUM 951 



Relation of the Cerebrum to the Distance Receptors, 952; Conditioned Re- 

 flexes, 954. 



