Apoptosis Regulatory Proteins/metabolism; Apoptosis; BH3 Interacting Domain Death Agonist Protein/metabolism; Membrane Proteins/metabolism; Neurons/physiology; Proto-Oncogene Proteins/metabolism; Tumor Suppressor Proteins/metabolism; bcl-2 Homologous Antagonist-Killer Protein/metabolism; bcl-2-Associated X Protein/metabolism; Animals; Apoptosis Regulatory Proteins/deficiency; Apoptosis Regulatory Proteins/genetics; BH3 Interacting Domain Death Agonist Protein/deficiency; BH3 Interacting Domain Death Agonist Protein/genetics; Bcl-2-Like Protein 11; Caspases/metabolism; Cells, Cultured; Cerebellum/cytology; Cytochromes c/metabolism; Intracellular Membranes/metabolism; Membrane Proteins/deficiency; Membrane Proteins/genetics; Mice; Mice, Knockout; Mitochondria/metabolism; Models, Biological; Permeability; Protein Multimerization; Proto-Oncogene Proteins/deficiency; Proto-Oncogene Proteins/genetics; Stress, Physiological; T-Lymphocytes/physiology; Tumor Suppressor Proteins/deficiency; Tumor Suppressor Proteins/genetics; bcl-2 Homologous Antagonist-Killer Protein/chemistry; bcl-2 Homologous Antagonist-Killer Protein/genetics; bcl-2-Associated X Protein/chemistry; bcl-2-Associated X Protein/genetics