afferent afferentpathways anatomieethistologie anatomy atlas atlases brain brainneoplasms cats cerebellarcortex cerebellum cerebralventricles cervelet histology magneticresonanceimaging mammals medicalradiology medicine methods microscopie microscopy nervoussystem neurology neurons neurosciences physiology psychiatry surgery techniqued'imagerieparrésonancemagnétiquenucléaire tronccérébral tumors ventricles wl310s9611985