Interhemispheric asymmetry of the N20 subcomponent latency: new parameter of median nerve somatosensory evoked potentials in healthy adults

• Autorzy: Kinalski R.
• Języki publikacji: EN

Abstrakty

EN

For quantification in SI units the effects of sensory inputs influenced the poststroke interhemispheric sensorimotor disintegration the tools and procedures of clinical neurophysiology are needed. Detailed statistical analysis have proved that in healthy adults latency of N20 peak onset (N20o) recorded from one contralateral parietal (CPc) hemisphere is the best standard parameter for normal values. Such responses are also evoked in ipsilateral parietal (CPi) hemisphere. Stimulating right (R) then left (L) median nerves and using cephalic CP-Fz recording montage we have recorded (rec) SEPs simultaneously from CPc and CPi in the adult healthy right handed 9 men and 11 women of different age (39.16 ± 12.56 years) and height (H) (173.32 ± 10.18cm). In comparison with N20 the N20o latency mean values (LMV) to CPi were significantly longer both for R (P=0.001) and for L (P=0.008). Irrespective to side of stimulation and recording only the LMV of N20o correlated with H (Corr): R-recCPc-Corr r=0.53, P=0.008. R-recCPi-Corr r=52, P=0.007. L-recCPc-Corr r=68, P=0.0004. L-rec-CPi-Corr r=0.55; P=0.007.

• Wydawca: -
• Czasopismo: Acta Neurobiologiae Experimentalis
• Rocznik: 2013
• Tom: 73
• Numer: Suppl.1
• Opis fizyczny: p.14

Twórcy

autor

Kinalski R.

• Clinical Neurophysiology Laboratory, Physiotherapy Faculty, University of Medical Science, Bialystok, Poland
• Clinical Neurophysiology Chair and Department, Collegium Medicum, Nicolaus Copernicus University, Torun, Poland