Outline

8.1 Motor Neuronal Death Is Gated by Neuronal Activity

8.2 Developing Muscle Fibers Start Off with Polyneuronal Innervation

8.3 Autonomic Neurons Refine Their Inputs and Outputs

8.4 Donald Hebb Speculated about Neural Plasticity

8.5 Long-Term Potentiation (LTP) Confirms the Existence of Hebbian Synapses

• RESEARCHERS AT WORK Cells That Fire Together Wire Together

8.6 A Class of Glutamate Receptors Enforces Hebbian Rules

• BOX 8.1 DOES HIPPOCAMPAL LTP MEDIATE LEARNING?

8.7 The Brain Must Integrate Input from the Two Eyes

8.8 Even Spontaneous, Apparently Random Activity Can Provide Order

• RESEARCHERS AT WORK Spontaneous Waves of Retinal Activity Form Ocular Dominance Bands in the LGN

8.9 The Gray Matter of Human Cortex Thins as We Mature