9 Audio components, namely, electrodes with plastic shields used for intercranial stimulation of laboratory animals in scientific and medical research; audio cables for use in the fields of medical treatment, diagnosis and research, health care, epidemiology, genetics, surgery, and related research, diagnosis and treatment; optogenetic components, namely, electrodes, electrical connectors and electrical cords with plastic shields used for intercranial stimulation of laboratory animals in scientific and medical research performed using optogenetic techniques; medical components, diagnostic components, audiology components, namely, electrodes and electrical connectors and electrical cords with plastic shields use in hearing aid devices; optogenetic components, namely, electrodes, electrical connectors, and electrical cords with plastic shields used for intercranial stimulation of laboratory animals in scientific and medical research employing optogenetic techniques.