Method of monitoring locations in the brain

In a method for electrical monitoring of a plurality of locations of the brain including (a) temporarily implanting an electrode array which has a connector-engaging multiconductor annular-ring-type tail, (b) inserting the tail into an axially extending tail-receiving passage of a connector body that also includes first and second rows of pin-receptacle spaces on either side of the axis, each space being substantially orthogonal to and intersecting with the tail-receiving passage, such pin-receptacle spaces extending into the connector body from a first lengthwise surface thereof, and (c) inserting pins of a plug into the pin-receptacle spaces such that pairs of connecting pins engage corresponding conductor rings of the tail, the improvement comprising:

• providing a plurality of access holes along a second lengthwise surface of the connector body, each access hole extending from the second elongate lengthwise surface to the tail-receiving passage to provide electrical access to a corresponding one of the conductor rings of the tail;
• and applying a stimulus to a selected point of the brain by inserting a stimulating probe into corresponding adjacent access openings.