1. An implantable neurological probe comprising: a supportive backing layer comprising a substantially planar surface and defining a plurality of cutouts distributed over the substantially planar surface, the supportive backing layer having a protrusion extending into each of the plurality of cutouts of the supportive backing layer; and a flexible substrate disposed on the supportive backing layer and comprising an insulative layer, a conductive layer comprising one or more conductive traces disposed on the insulative layer, at least one microelectrode element disposed on the insulative layer and coupled to the one or more conductive traces, and a second insulative layer disposed on the conductive layer, the at least one microelectrode element arranged along the at least one protrusion.