A biocompatible support for regioselective acquisition of electrical signals of neurons propagating along at least one nerve fiber encapsulated in a nerve fiber bundle and selective electrical stimulation of at least one nerve fiber Describes an implantable electrode device with a base (1), wherein the biocompatible supporting base (1) has at least one supporting base area, which supporting base area is formed of a bundle of nerve fiber bundles It has a supporting base surface (1 ) which can be applied in a manchette shape around and is oriented toward the nerve fiber bundle in the implanted state and has a straight cylindrical shape, and the supporting base surface 1 ) has an extent oriented in the axial direction (a) and the circumferential direction (U), the first electrode device (2) is attached to the supporting base surface (1 1 The pole device (2) comprises at least three first electrode structures (3) in the axial direction and at least three first electrode structures (3) with at least two circumferentially arranged first electrode surfaces (4) And at least two first electrode strips (5) spaced apart from each other in the circumferential direction and each having a ring shape, wherein the first electrode strip (5) has at least three electrode structures On both sides in the axial direction and the first electrode device (2) is connectable or connected to the signal detection and generator (6). The present invention relates to a method for manufacturing an electrode device comprising a support base surface (1 ) facing a nerve fiber bundle and having a straight cylindrical shape, in the axial direction, at least one Wherein a second electrode device is arranged and the second electrode device is axially spaced apart from each other and extends in the circumferential direction and has at least two At least two second electrode bands (8) and at least two second electrode bands (8) arranged in a similar manner in the circumferential direction (U) between the ax
