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Advanced Neurology Evoked potential response in parkinsonian syndromes

Table 3. Comparisons between different patient categories
VEP, BAER, SSEP IPD (n=50) versus HC APS (n=50) IPD (n=50) TV (n=37)
parameters (n=50) versus HC (n=50) versus APS (n=50) versus PIGD (n=13)
Mann–Whitney P‑value Mann‑Whitney P‑value Mann–Whitney P‑value Mann–Whitney P‑value
U‑test Z score (2‑tailed) U‑test Z score (2‑tailed) U‑test Z score (2‑tailed) U‑test Z score (2‑tailed)
N75 (ms) R_VEP −0.427 0.669 −2.620 0.009 −1.231 0.218 −0.166 0.868
P100 (ms) R_VEP −4.561 <0.001 −6.374 <0.001 −0.038 0.970 −0.188 0.851
N145 (ms) R_VEP −2.365 0.018 −1.903 0.057 −0.479 0.632 −1.272 0.203
N75-P100 AMPLITUDE −4.136 <0.001 −4.311 <0.001 −0.390 0.697 −1.217 0.223
(μv) R_VEP
N75 (ms) L_VEP −0.586 0.558 −3.092 0.002 −1.551 0.121 −0.332 0.740
P100 (ms) L_VEP −5.371 <0.001 −6.571 <0.001 −0.483 0.629 −0.431 0.666
N145 (ms) L_VEP −3.575 <0.001 −2.772 0.006 −0.972 0.331 −0.984 0.325
N75-P100 AMPLITUDE −3.290 0.001 −4.324 <0.001 −0.741 0.459 −0.896 0.370
(μv) L_VEP
I (ms) R_BAER −3.551 <0.001 −1.379 0.168 −2.425 0.015 −1.897 0.058
IIR_BAER −6.125 <0.001 −2.778 0.005 −4.867 <0.001 −1.737 0.082
IIIR_BAER −7.219 <0.001 −4.267 <0.001 −3.694 <0.001 −2.570 0.010
IVR_BAER −6.019 <0.001 −3.011 0.003 −4.039 <0.001 −1.429 0.153
VR_BAER −6.492 <0.001 −4.450 <0.001 −2.521 0.012 −1.738 0.082
I-IIIR_BAER −7.655 <0.001 −4.549 <0.001 −4.241 <0.001 −1.350 0.177
III-VR_BAER −4.226 <0.001 −1.573 0.116 −1.383 0.167 −1.107 0.268
I-VR_BAER −6.469 <0.001 −4.683 <0.001 −2.731 0.006 −1.051 0.293
V/I (AMPLITUDE μv) −3.278 0.001 −3.314 0.001 −0.651 0.515 −0.656 0.512
R_BAER
I (ms) L_BAER −2.792 0.005 −1.248 0.212 −1.606 0.108 −0.920 0.358
IIL_BAER −6.598 <0.001 −3.898 <0.001 −4.705 <0.001 −1.451 0.147
IIIL_BAER −7.491 <0.001 −4.492 <0.001 −3.580 <0.001 −2.226 0.026
IVL_BAER −6.517 <0.001 −3.649 <0.001 −3.784 <0.001 −0.843 0.399
VL_BAER −6.803 <0.001 −5.411 <0.001 −2.394 0.017 −2.331 0.020
I-IIIL_BAER −7.735 <0.001 −4.972 <0.001 −4.224 <0.001 −1.350 0.177
III-VL_BAER −4.381 <0.001 −2.815 0.005 −1.128 0.259 −2.503 0.012
I-VL_BAER −6.882 <0.001 −5.780 <0.001 −2.513 0.012 −1.095 0.273
V/I (AMPLITUDE μv) −2.069 0.039 −3.582 <0.001 −1.846 0.065 −1.203 0.229
L_BAER
N9R_SSEP −1.187 0.235 −1.983 0.047 −1.038 0.299 −0.365 0.715
N13R_SSEP −0.414 0.679 −3.048 0.002 −2.661 0.008 −0.929 0.353
N20R_SSEP −0.658 0.510 −3.792 0.000 −3.199 0.001 −0.951 0.342
N13-N20R_SSEP −0.770 0.441 −3.884 0.000 −3.327 0.001 −0.155 0.877
N9L_SSEP −1.231 0.218 −1.538 0.124 −0.535 0.593 −0.343 0.732
N13L_SSEP −0.479 0.632 −2.993 0.003 −2.510 0.012 −0.841 0.400
N20L_SSEP −0.686 0.493 −3.809 <0.001 −3.234 0.001 −1.062 0.288
N13-N20L_SSEP −0.822 0.411 −4.060 <0.001 −3.516 <0.001 −0.599 0.549
Note: Statistically significant values are in bold font.
Abbreviations: IPD: Idiopathic Parkinson’s disease; APS: Atypical parkinsonian syndromes; TV: Tremor-predominant Parkinson’s disease;
PIGD: Postural instability and gait disorder Parkinson’s disease; L: Left, R: Right.

Volume 2 Issue 4 (2023) 6 https://doi.org/10.36922/an.1907