Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Absence of the Septum Pellucidum ?
    ### Response:
    The septum pellucidum (SP) is a thin membrane located at the midline of the brain between the two cerebral hemispheres, or halves of the brain.. It is connected to the corpus callosum -- a collection of nerve fibers that connect the cerebral hemispherers. This rare abnormality accompanies various malformations of the brain that affect intelligence, behavior, and the neurodevelopmental process, and seizures may occur.
    