## 3 Results
### Results of Neurophysiological Tests
\begin{table}
\begin{tabular}{c c c c c c c c c c c c c c} \hline \hline \multirow{3}{*}{**No. Patients**} & \multicolumn{6}{c}{**Ulmar Nerve**} \\ \cline{2-13}  & \multicolumn{3}{c}{**Electrical Stimulation Epb’s Point**} & \multicolumn{6}{c}{**MEP Erb’s Point**} & \multicolumn{6}{c}{**MEP CS**} \\ \cline{2-13}  & **Amplitude** & \multicolumn{3}{c}{**Latency**} & \multicolumn{3}{c}{**Amplitude**} & \multicolumn{3}{c}{**Latency**} & \multicolumn{3}{c}{**Amplitude**} & \multicolumn{3}{c}{**Latency**} \\ \cline{2-13}  & **\%** & **S Side** & **A Side** & **D** & **\%** & **S Side** & **A Side** & **D** & **\%** & **S Side** & **A Side** & **D** \\ \hline
1 & 0 & 14.2 & 14.1 & 0.1 & 21 & 14.0 & 14.3 & RL & 0 & 16.0 & 16.6 & RL \\
2 & 99 & 11.5 & 13.2 & RL & 98 & 11.4 & 12.8 & RL & 86 & 14.2 & 13.4 & 0.8 \\
3 & 0 & 15.0 & 14.6 & 0.4 & 2 & 15.0 & 14.5 & 0.5 & 0 & 16.3 & 16.8 & RL \\
4 & 43 & 17.7 & 16.5 & 1.2 & 35 & 17.0 & 16.4 & 0.6 & 71 & 19.2 & 18.7 & 0.5 \\
5 & 100 & LP & 11.2 & NA & 100 & 13.0 & 10.9 & 2.1 & 26 & 14.5 & 13.8 & 0.7 \\
6 & 0 & 13.3 & 12.8 & 0.5 & 3 & 12.0 & 11.8 & 0.2 & 9 & 13.1 & 13.4 & RL \\
7 & 100 & LP & 11.0 & NA & 100 & LP & 10.9 & NA & 100 & LP & 16.0 & NA \\
8 & 100 & LP & 11.3 & NA & 100 & LP & 11.1 & NA & 100 & LP & 15.3 & NA \\
9 & 0 & 13.6 & 13.4 & 0.2 & 0 & 14.0 & 13.2 & 0.8 & 7 & 15.3 & 15.0 & 0.3 \\
10 & 0 & 12.5 & 12.0 & 0.5 & 0 & 12.0 & 12.0 & 0.0 & 16 & 13.8 & 13.9 & RL \\
11 & 0 & 11.8 & 11.5 & 0.3 & 29 & 11.0 & 11.3 & RL & 0 & 12.5 & 12.8 & RL \\
12 & 0 & 11.2 & 11.1 & 0.1 & 8 & 11.0 & 10.6 & 0.4 & 35 & 12.2 & 12.3 & RL \\
13 & 0 & 12.8 & 12.5 & 0.3 & 13 & 12.0 & 12.4 & RL & 0 & 14.2 & 15.2 & RL \\
14 & 75 & 15.2 & 13.2 & 2.0 & 27 & 14.0 & 13.4 & 0 & 0.6 & 26 & 16.1 & 15.7 & RL \\ MV/SD & 37 \(\pm\) 45 & 13.5 \(\pm\) 1.8 & 12.7 \(\pm\) 1.5 & 0.6 \(\pm\) 0.6 & 38 \(\pm\) 40 & 13.0 \(\pm\) 1.7 & 12.5 \(\pm\) 1.6 & 0.7 \(\pm\) 0.6 & 34 \(\pm\) 37 & 14.8 \(\pm\) 1.9 & 14.9 \(\pm\) 1.7 & 0.6 \(\pm\) 0.2 \\ Range & 0-100 & 11.2–17.7 & 11.0–16.5 & 0.1–2.0 & 0–100 & 11.0–17.0 & 10.6–16.4 & 0.0–2.1 & 0–100 & 12.2–19.2 & 12.3–18.7 & 0.3–0.8 \\ \hline \hline \end{tabular}
\end{table} 
Table 4: _Cont._Figure 1 presents the application of the magnetic stimulus via the magnetic coil (A--at the Erb's point; B--at the cervical root level). The recordings of MEP after stimulation from the level of Erb's point and cervical roots are also presented. Table 6 summarises the results of needle EMG recordings from muscles and SNCS results of the examined nerves on the symptomatic side. \begin{table}
\begin{tabular}{l c c c c} \hline \hline  & \multicolumn{4}{c}{**Nerve**} \\ \cline{2-5}  & **AX/C5** & **MC/C6** & **RAD/C7** & **ULN/8** \\ \hline
**Latency (ms)** & & & & \\ \hline Electrical stimulation Erb’s point & 3.1 \(\pm\) 0.3 & 4.2 \(\pm\) 0.5 & 4.3 \(\pm\) 0.5 & 12.1 \(\pm\) 1.0 \\ MEP Erb’s point & 3.0 \(\pm\) 0.3 & 3.9 \(\pm\) 0.5 & 4.0 \(\pm\) 0.7 & 11.3 \(\pm\) 0.9 \\ MEP root & 4.7 \(\pm\) 0.6 & 5.6 \(\pm\) 0.5 & 5.8 \(\pm\) 0.8 & 13.4 \(\pm\) 0.8 \\ \hline \hline \end{tabular} Abbreviations: AX—axillary nerve; MC—muscolocutaneous nerve; RAD—radial nerve; UUN—ulnar nerve.  
\end{table} 
Table 5: Normative values of the latency parameter (mean value and standard deviation) CMAP and MEP of the examined nerves of the brachial plexus in the control group of healthy volunteers. The data of the reference values have been utilised from previous studies [4]. Figure 1: Example of CMAP and MEP recordings on the right (R) and left (L) sides and the location of the magnetic coil during neurophysiological studies. Abbreviation: level of the MEP stimulation. (A)—at the Erb’s point; (B)—at the cervical root level; dLAT/CV—distance latency; AMP—amplitude; AREA—surface area; DUR—duration; LAT—latency; DP—deltoid posterior muscle; BB—biceps; brachii muscle. In one patient with whiplash syndrome, the EMG examination of all examined muscles and SNCS results did not differ from the normative parameters.