Electrotherapy medical devices, namely, neuro-stimulation devices for treatment of neurological conditions; stimulating and recording medical electrode implants composed of artificial materials; visual prostheses and visual cortical implants composed of artificial materials; Medical devices in the nature of medical cortical electrodes integrally attached to implantable cortical stimulators for treatment of neurological conditions and also featuring a system consisting of, medical electrodes, medical stimulators, headpieces for medical use and wearable processors for medical use; surgical apparatus and instruments; medical apparatus and instruments for use in surgery; medical devices for use in treating or diagnosing neurological conditions