Levels of Alpha and Gamma Motoneuron Control-

• Levels of Alpha and Gamma Motoneuron Control-

• Spinal cord
• all or none - Each alpha motor neuron forms a motor unit.
• Each segment has some segmental integration-
• Monosynaptic DRG to alpha motoneuron direct synapse
• Motor unit linking (interneurons)
• Sensory-Motor linking (Reflex activation)
• Intersegmental integration
• Supraspinal control
• Brainstem Nuclei-
• Lateral vestibulospinal tract
• Medial vestibular spinal tract
• Reticulospinal tracts;
• Rubrospinal tract
• Cerebellar control loop- Dorsal & ventral cerebellospinal tract
• Basal Ganglial Loop - Association Cortex through BG to Thalamus
• Cerebral cortex- Pyramidal Tract