A method and apparatus for identifying electrodes attached to a defibrillator and adjusting patient therapy delivered by a defibrillator in response thereto. The first outer jacket is anchored to a side of a housing of the fiber receiving device and the second outer jacket is anchored to a side of the fiber receiving device. The stimulation is delivered to targeted brain structures to adjust the activity of those structures. The resilient tine may be equipped with protruding gripping and clamping elements on each side or with ribs on one of its outer surfaces to provide spring action gripping and clamping capability during fastening. An additional aspect of the present invention relates to enantiomerically substituted pyrrolidines, piperidines, and azepines.