A duplexer includes a transmit filter of a ladder type filter, connected between a common terminal and a transmitting terminal, and a receive filter of the ladder type filter, connected between the common terminal and a receiving terminal. A method for treating a patient’s neurological disorder in accordance with a particular embodiment includes, in a patient identified as having at least one of a neuropsychological disorder and a neuropsychiatric disorder, implanting at least one stimulation electrode within the patient’s skull cavity, and outside a cortical surface of the patient’s brain. Next, the method includes drilling a well with a logging while drilling means so that real time logging data is generated along with drilling data and calculating an instantaneous formation dip angle.