Cerebellum/cytology; Cerebellum/growth & development; Inhibitory Postsynaptic Potentials/physiology; Neural Inhibition/physiology; Neurons/physiology; Receptors, Interleukin/physiology; Anesthetics, Local/pharmacology; Animals; Animals, Newborn; Biophysics; Calbindins; Electric Stimulation/methods; Excitatory Amino Acid Antagonists/pharmacology; Gene Expression Regulation, Developmental/genetics; In Vitro Techniques; Inhibitory Postsynaptic Potentials/drug effects; Inhibitory Postsynaptic Potentials/genetics; Interleukin-1 Receptor-Like 1 Protein; Mice; Mice, Knockout; Neural Inhibition/drug effects; Neural Inhibition/genetics; Neuronal Calcium-Sensor Proteins/metabolism; Neurons/drug effects; Neuropeptides/metabolism; Parvalbumins/metabolism; Patch-Clamp Techniques/methods; Quinoxalines/pharmacology; Receptors, Interleukin/deficiency; S100 Calcium Binding Protein G/metabolism; Tetrodotoxin/pharmacology