{
    "@context": "https://schema.org",
    "@type": "Dataset",
    "name": "M. Sternocleidomastoideus — surface EMG electrode placement",
    "id": "sternocleidomastoideus_r",
    "slug": "sternocleidomastoideus-r",
    "url": {
        "en": "https://emgguide.de/muscle/sternocleidomastoideus-r",
        "de": "https://emgguide.de/de/muscle/sternocleidomastoideus-r",
        "viewer3d": "https://emgguide.de/?muscle=sternocleidomastoideus_r",
        "json": "https://emgguide.de/muscle/sternocleidomastoideus-r.json"
    },
    "names": {
        "latin": "M. Sternocleidomastoideus",
        "en": "Sternocleidomastoid",
        "de": "Kopfwender"
    },
    "side": "right",
    "region": {
        "key": "HEAD_NECK",
        "en": "Head & Neck",
        "de": "Kopf & Nacken"
    },
    "placementStandard": "adapted from peer-reviewed literature (see source)",
    "source": {
        "url": "https://pubmed.ncbi.nlm.nih.gov/11801425/",
        "short": "Falla et al. 2002",
        "citation": "Falla D, Dall'Alba P, Rainoldi A, Merletti R, Jull G. Location of innervation zones of sternocleidomastoid and scalene muscles - a basis for clinical and research electromyography applications. Clin Neurophysiol. 2002;113(1):57-63."
    },
    "electrode": {
        "position": {
            "en": "Sternal head, 1/3 of the way from the jugular notch to the mastoid process (lower third, below the innervation zone)",
            "de": "Sternalkopf, 1/3 der Strecke von der Incisura jugularis zum Proc. mastoideus (unteres Drittel, unterhalb der Innervationszone)"
        },
        "orientation": {
            "en": "Parallel to muscle fiber direction",
            "de": "Parallel zum Muskelfaserverlauf"
        },
        "sensorRules": "bipolar Ag/AgCl, ≤ 10 mm conductive diameter, 20 mm inter-electrode distance, parallel to fibres, reference electrode on bone (SENIAM)"
    },
    "landmarks": null,
    "anatomy": {
        "function": {
            "en": "Ipsilateral lateral flexion, contralateral rotation, cervical spine flexion, accessory respiratory muscle",
            "de": "Ipsilaterale Lateralflexion, kontralaterale Rotation, Flexion der HWS, Atemhilfsmuskel"
        },
        "origin": {
            "en": "Manubrium of sternum, medial third of clavicle",
            "de": "Manubrium sterni, mediales Drittel der Clavicula"
        },
        "insertion": {
            "en": "Mastoid process, superior nuchal line",
            "de": "Processus mastoideus, Linea nuchalis superior"
        },
        "innervation": {
            "en": "Spinal accessory nerve (XI), from the upper five cervical ventral roots",
            "de": "N. accessorius (XI), aus den oberen fünf zervikalen Vorderwurzeln"
        }
    },
    "testMovement": {
        "en": "Head rotation to opposite side against resistance",
        "de": "Kopfrotation zur Gegenseite gegen Widerstand"
    },
    "placementNotes": {
        "source": "Criswell E. Cram's Introduction to Surface Electromyography. 2nd ed. Jones & Bartlett; 2011, p. 279",
        "site": "Sternocleidomastoid (SCM)",
        "placementType": "specific",
        "signalCheck": {
            "de": "Kopf drehen, seitneigen oder nach vorn beugen.",
            "en": "Rotate, side-bend or flex the head."
        },
        "crosstalk": {
            "de": [
                "oberer Trapezius",
                "Scaleni",
                "zervikale Nacken-/Kopfmuskulatur"
            ],
            "en": [
                "upper trapezius",
                "scalenes",
                "cervical neck/head muscle groups"
            ]
        },
        "artifacts": {
            "de": "EKG-Einstreuung, verstärkt bei zu weit ventraler Elektrodenlage.",
            "en": "ECG pickup, increased if electrodes sit too far anteriorly."
        }
    },
    "mvcTest": null,
    "measurability": "surface EMG",
    "license": "Free to cite with attribution to emgguide.de. Electrode placements based on SENIAM (Hermens et al. 2000) and the cited literature; not an official SENIAM product; not a substitute for medical advice.",
    "publisher": {
        "name": "EMG Guide (menios GmbH)",
        "url": "https://emgguide.de/"
    },
    "dateModified": "2026-10-21"
}