Analyse �lectrophysiologique et comparaison, chez l'Homme, du r�flexe de Hoffmann et du r�flexe myotatique

Paillard, Jean François

doi:10.1007/bf00363666

Cited by 39 publications

(16 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is not, however, an invariable rule as, first observed by Lloyd in animals (1943) and by Magladery et al (1951b) and by Paillard (1955) in man.…”

mentioning

confidence: 68%

“…The monosynaptic reflex which can be elicited from the large muscles of posture (Hoffman, 1918;Magladery, Porter, Park, and Teasdall, 1951a;Magladery, Teasdall, Park, and Porter, 1951b) in response to electrical activation of the mixed peripheral nerve has been used as an index of the central excitatory state in the study of human spinal cord physiology (Paillard, 1955(Paillard, , 1959Hagbarth, 1962). …”

mentioning

confidence: 99%

See 1 more Smart Citation

Central responses to electrical activation of the peripheral nerves supplying the intrinsic hand muscles.

Thorne¹

1965

Journal of Neurology, Neurosurgery & Psychiatry

View full text Add to dashboard Cite

“…This is not, however, an invariable rule as, first observed by Lloyd in animals (1943) and by Magladery et al (1951b) and by Paillard (1955) in man.…”

mentioning

confidence: 68%

mentioning

confidence: 99%

Central responses to electrical activation of the peripheral nerves supplying the intrinsic hand muscles.

Thorne¹

1965

Journal of Neurology, Neurosurgery & Psychiatry

View full text Add to dashboard Cite

“…It was reasoned that the facilitation is produced by activation of muscle spindle afferents during relaxation of the muscle subsequent to contraction (Paillard, 1955). This explanation is supported by the finding that F2 persists after spinal hemisection (Liberson & Paillard, 1963).…”

Section: The Origin Of F2mentioning

confidence: 97%

“…This gives a calculated loop time of about 45 msec which is in good agreement with the latency of F2 which appeared at an interval of 50 msec between the conditioning and the test stimulus. (Paillard, 1955;Roll, Bonnet & Hugon, 1972). The H-reflex appeared and approached its maximum at stimulation intensities below the threshold for the M-response.…”

mentioning

confidence: 99%

“…Excitability curves of the motoneuronal pool obtained by electrical stimulation of 400 M. CHOFFLON, J.-M. LACHAT AND D. G. RCEGG the tibial nerve have been extensively studied in man (Hoffmann, 1934;Paillard, 1955;Magladery, 1955), but conditioning stimuli subthreshold for the M-and the H-response were used only by Taboffkovat & Sax (1969). In accord with the latter authors, a late facilitation was still observed in the present study.…”

mentioning

confidence: 99%

See 1 more Smart Citation

A transcortical loop demonstrated by stimulation of low‐threshold muscle afferents in the awake monkey

Chofflon¹,

Lachat²,

Rüegg³

1982

The Journal of Physiology

View full text Add to dashboard Cite

SUMMARY1. The hypothesis that a transcortical loop can be activated by electrical stimulation of low-threshold muscle afferents was tested. The effect of these afferents on the excitability of motoneurones was measured with the monosynaptic spinal reflex (H-reflex).2. Four monkeys were trained to maintain a constant tonic activity in the soleus muscle so that the amplitude of evoked H-reflexes was constant. The intensity of conditioning stimuli was just subthreshold for direct or reflex electromyographic responses. The intensity of the test stimuli was adjusted to evoke an H-reflex of maximal amplitude. The amplitude of the H-reflex was recorded for different intervals between conditioning and test stimuli (10-1000 msec).3. The excitability curve obtained showed three components: (1) an early excitatory process, Ft, at intervals of 10-20 msec, (2) a late excitatory process, F2, at intervals of40-80 msec and (3) a short latency depression of about 400 msec duration, on which Ft and F2 were superimposed.4. F2 was selectively abolished during cooling of the contralateral motor cortex, after an irreversible lesion of the motor cortex, and after pyramidotomy; however, Ft and the inhibition remained unchanged.5. The conduction time from the tibial nerve to the somatosensory cortex (SI), the cortical delay between SI and motor cortex, and the conduction time from motor cortex to the soleus muscle were measured in an anaesthetized animal. The sum of these values as an estimate of the transcortical loop time was 5 msec shorter than the latency of F2.6. It is concluded that a transcortical loop can be activated by electrical stimulation of low-threshold muscle afferents and, by analogy, also by mechanical perturbations applied during a motor task.

show abstract

Surface EMG Applications in Neurophysiology

Merletti

Farina

2016

Surface Electromyography : Physiology, Engineering, and Applications

View full text Add to dashboard Cite

Analyse �lectrophysiologique et comparaison, chez l'Homme, du r�flexe de Hoffmann et du r�flexe myotatique

Cited by 39 publications

References 50 publications

Central responses to electrical activation of the peripheral nerves supplying the intrinsic hand muscles.

Central responses to electrical activation of the peripheral nerves supplying the intrinsic hand muscles.

A transcortical loop demonstrated by stimulation of low‐threshold muscle afferents in the awake monkey

Surface EMG Applications in Neurophysiology

Contact Info

Product

Resources

About