Methods and apparatuses for dispersing a compound within the patient are described. In one embodiment, an effective amount of a compound may be present in the cerebrospinal fluid of a patient and a force may be applied to the torso of the patient sufficient to enhance the convection of the cerebrospinal fluid. In another embodiment, a bolus including a compound may be injected into the cerebrospinal fluid of a patient. The volume of the bolus may be between about 5% and 30% of the total volume of the cerebrospinal fluid of the patient.
