Normalize EMG by MVC or peak
Usage
normalizeEMG(x, method = c("mvc", "peak"), mvc = NULL, scale_percent = TRUE)References
Merletti R, Parker PA (2004). "Electromyography: Physiology, Engineering, and Non-Invasive Applications." IEEE Press/Wiley.
See also
rectifyEMG() for signal rectification,
computeRMSEnvelope() for RMS envelope computation,
processEMG() for complete EMG processing pipeline.
Examples
x <- matrix(abs(rnorm(500)), ncol = 2)
normalizeEMG(x, method = "peak")
#> [,1] [,2]
#> [1,] 48.3008898 24.0174837
#> [2,] 1.9763276 3.2642499
#> [3,] 29.5799574 20.5429177
#> [4,] 4.9521596 7.8499335
#> [5,] 43.3657044 20.1628303
#> [6,] 80.9066929 37.0390943
#> [7,] 9.5556458 5.6690429
#> [8,] 55.3830467 2.4250827
#> [9,] 20.3131894 1.2496210
#> [10,] 16.7414237 24.6616943
#> [11,] 42.6235589 24.2681718
#> [12,] 44.1715245 3.9221748
#> [13,] 13.3472639 17.2384309
#> [14,] 22.0286341 20.4315257
#> [15,] 19.4888018 4.5960760
#> [16,] 15.9243529 28.0958621
#> [17,] 32.3710221 55.7806761
#> [18,] 51.5565257 25.8365834
#> [19,] 7.7519009 21.5099760
#> [20,] 61.9059877 13.7080027
#> [21,] 7.3205838 14.3934389
#> [22,] 82.8852911 45.0352625
#> [23,] 8.1547800 16.6824312
#> [24,] 23.4739340 17.6388084
#> [25,] 14.0670166 35.7673943
#> [26,] 30.0426526 1.6265579
#> [27,] 15.3841002 32.5635418
#> [28,] 32.8661654 12.0270309
#> [29,] 41.9261644 13.9095670
#> [30,] 13.9898912 1.0464428
#> [31,] 18.0181519 3.5477403
#> [32,] 15.8731134 5.4079049
#> [33,] 10.3215888 6.2318029
#> [34,] 29.7915131 20.8862865
#> [35,] 74.3954051 3.8479726
#> [36,] 26.4467968 32.3897721
#> [37,] 19.2397730 58.6922126
#> [38,] 24.1890008 35.3037428
#> [39,] 1.8035693 27.6162173
#> [40,] 7.6210445 27.3662579
#> [41,] 40.6677728 38.6391640
#> [42,] 32.1750823 15.0289792
#> [43,] 47.9138914 23.8646913
#> [44,] 6.5494116 2.3887049
#> [45,] 8.9947686 61.7568546
#> [46,] 0.2985480 40.6692357
#> [47,] 1.6545335 34.6567181
#> [48,] 66.6508045 0.9703552
#> [49,] 34.2281029 49.4776663
#> [50,] 28.9436141 5.9502438
#> [51,] 0.9473488 21.9141269
#> [52,] 11.6048137 7.6863742
#> [53,] 68.3520249 16.3493824
#> [54,] 3.4866926 31.3280251
#> [55,] 18.7904959 23.4825402
#> [56,] 16.6950569 39.2657245
#> [57,] 42.6624700 37.1629616
#> [58,] 22.6427691 7.8427497
#> [59,] 19.0898064 21.1371494
#> [60,] 78.9629966 2.8030109
#> [61,] 28.2131474 8.8402041
#> [62,] 28.1050892 26.7283414
#> [63,] 36.8433473 38.8412857
#> [64,] 28.0749436 29.9426182
#> [65,] 20.9746595 8.3835001
#> [66,] 71.2183790 8.4684230
#> [67,] 17.1873745 34.6100939
#> [68,] 20.1870006 17.2659738
#> [69,] 22.9016044 39.7846877
#> [70,] 15.7843846 19.0374269
#> [71,] 49.9853503 15.2705809
#> [72,] 16.5888623 30.5550926
#> [73,] 28.7344052 27.0372364
#> [74,] 24.1404766 6.1463264
#> [75,] 4.8006249 20.0809881
#> [76,] 27.9517255 18.6869635
#> [77,] 37.5653969 48.3995696
#> [78,] 1.0900712 32.3479767
#> [79,] 11.3422752 37.2570490
#> [80,] 60.8917094 10.8579108
#> [81,] 63.4480345 29.3025397
#> [82,] 5.9234560 30.4211228
#> [83,] 6.8648120 45.6463804
#> [84,] 3.3111690 35.0673566
#> [85,] 21.1149025 62.6868224
#> [86,] 13.5094599 56.9172873
#> [87,] 43.1899377 23.1460007
#> [88,] 8.8821252 34.1892222
#> [89,] 2.5213426 29.3866711
#> [90,] 19.3860804 3.6521830
#> [91,] 25.4583790 49.2726243
#> [92,] 32.4722196 36.5735377
#> [93,] 52.6342416 46.0923113
#> [94,] 2.2795057 3.4275249
#> [95,] 22.3447935 13.1352059
#> [96,] 5.8311936 33.0725473
#> [97,] 3.5434481 29.9018670
#> [98,] 34.1020967 16.9052573
#> [99,] 22.6669940 22.2765841
#> [100,] 2.8468229 12.2668367
#> [101,] 14.6382174 26.4743063
#> [102,] 18.4443539 30.5615494
#> [103,] 22.9964461 29.4054919
#> [104,] 84.1644810 12.6478102
#> [105,] 3.4805880 18.9340725
#> [106,] 22.8475686 40.3614415
#> [107,] 53.1449932 8.8743510
#> [108,] 22.4108221 0.8347709
#> [109,] 10.2730959 35.3863209
#> [110,] 74.5710769 57.4748649
#> [111,] 15.8955412 1.6771661
#> [112,] 30.9234536 15.8974673
#> [113,] 39.0853615 13.4390107
#> [114,] 0.1254170 3.1542817
#> [115,] 19.6210036 34.1522986
#> [116,] 43.9963990 14.0032472
#> [117,] 36.5660267 13.4894831
#> [118,] 68.1532138 29.0561505
#> [119,] 7.5979233 24.4148028
#> [120,] 46.9434390 32.5887244
#> [121,] 22.3468748 49.2383486
#> [122,] 18.1690947 10.6315094
#> [123,] 59.1166257 68.6151378
#> [124,] 7.1958323 50.2066543
#> [125,] 12.8663238 48.9783085
#> [126,] 22.6612383 0.1311314
#> [127,] 78.0339396 12.6849777
#> [128,] 10.3965733 14.6094033
#> [129,] 7.5904614 26.0132409
#> [130,] 40.8852131 9.2020153
#> [131,] 11.4743341 23.9697543
#> [132,] 73.0629711 25.6930446
#> [133,] 39.5866524 24.8076914
#> [134,] 11.1031971 1.0260682
#> [135,] 12.9256915 40.7596292
#> [136,] 42.5371611 56.3190596
#> [137,] 18.9624328 23.3217427
#> [138,] 40.0119842 12.4491305
#> [139,] 15.9205959 0.2171505
#> [140,] 91.2212419 59.8123219
#> [141,] 1.0936421 1.3399108
#> [142,] 20.0201522 13.8403596
#> [143,] 2.6629700 0.7983706
#> [144,] 12.4094032 48.4032228
#> [145,] 23.7358371 2.2703786
#> [146,] 72.3410481 3.2094792
#> [147,] 5.0268690 44.5270261
#> [148,] 4.2242380 14.6835692
#> [149,] 12.1796788 5.9385036
#> [150,] 9.1351902 17.2253537
#> [151,] 26.5923641 32.1051127
#> [152,] 45.5441843 24.7392447
#> [153,] 28.4299201 25.6847133
#> [154,] 83.1957771 52.0573510
#> [155,] 37.1173929 83.3021619
#> [156,] 25.2507132 5.7591100
#> [157,] 81.6774407 64.0542280
#> [158,] 41.2758032 36.7115957
#> [159,] 33.8378901 0.1389493
#> [160,] 13.0776354 35.7989287
#> [161,] 26.3327187 43.8992862
#> [162,] 22.9805086 57.0886575
#> [163,] 1.9013580 38.2892704
#> [164,] 4.2375618 11.5538538
#> [165,] 23.5076551 0.4853614
#> [166,] 23.4224834 11.5937950
#> [167,] 24.1233176 10.5401309
#> [168,] 29.7020351 100.0000000
#> [169,] 44.8646826 58.7547786
#> [170,] 49.9399169 11.1741998
#> [171,] 24.1875605 16.0210514
#> [172,] 14.3175414 31.2846997
#> [173,] 12.6236584 57.9142770
#> [174,] 7.1845272 61.8645075
#> [175,] 33.7956046 17.6706323
#> [176,] 9.8971685 10.8156767
#> [177,] 21.7773644 0.3161414
#> [178,] 25.3302191 28.1248835
#> [179,] 14.3090883 31.4669183
#> [180,] 78.9298372 9.9850192
#> [181,] 44.1991815 60.0002596
#> [182,] 26.6975223 30.2902983
#> [183,] 36.5509348 8.5925889
#> [184,] 43.4356806 54.3464460
#> [185,] 3.4489872 25.3845537
#> [186,] 2.9875881 18.4328104
#> [187,] 15.6680029 54.9681369
#> [188,] 6.9350095 0.7343649
#> [189,] 19.3604482 8.5448974
#> [190,] 12.3629527 29.5253385
#> [191,] 5.4930726 13.7455042
#> [192,] 55.9803459 52.9960896
#> [193,] 6.9821874 12.4264865
#> [194,] 18.0431614 8.5681133
#> [195,] 26.0237446 2.8067733
#> [196,] 66.6676478 79.8569463
#> [197,] 20.7740896 14.1475548
#> [198,] 58.9221449 35.2427333
#> [199,] 55.7407633 32.9203561
#> [200,] 0.1977706 36.5605722
#> [201,] 8.4912839 8.6891714
#> [202,] 32.2885867 17.1651394
#> [203,] 3.0306297 27.1832151
#> [204,] 18.2832949 12.9203605
#> [205,] 43.6230177 13.9168819
#> [206,] 16.4185407 31.0924106
#> [207,] 9.2383007 21.4698723
#> [208,] 82.3389399 85.7908761
#> [209,] 17.7800790 50.3199581
#> [210,] 20.6408839 13.9207875
#> [211,] 39.9073457 16.6870765
#> [212,] 29.6677004 42.2688993
#> [213,] 4.1238354 31.2959257
#> [214,] 1.5134674 3.5255464
#> [215,] 9.4422376 14.6421487
#> [216,] 10.5954836 18.7368680
#> [217,] 5.2714908 24.5548296
#> [218,] 12.6834243 51.1647755
#> [219,] 27.8221613 39.0368354
#> [220,] 29.7435327 15.4236810
#> [221,] 32.0461990 28.5810886
#> [222,] 6.6890084 29.7881153
#> [223,] 32.4061628 41.1654047
#> [224,] 40.0237939 5.3627826
#> [225,] 40.9601807 41.8036651
#> [226,] 15.0042566 55.8506474
#> [227,] 3.4768335 13.1542558
#> [228,] 100.0000000 19.9634053
#> [229,] 5.5172902 10.7605213
#> [230,] 8.7283038 29.8421220
#> [231,] 27.0154325 30.7405282
#> [232,] 0.3953227 38.3215545
#> [233,] 57.2825955 45.6105721
#> [234,] 65.6461192 40.9512497
#> [235,] 19.5850914 8.8295553
#> [236,] 27.2622647 28.9779288
#> [237,] 38.0376429 15.3742488
#> [238,] 57.7146141 6.3702678
#> [239,] 19.9167179 7.1739418
#> [240,] 66.4726682 32.7659621
#> [241,] 22.7873227 14.6938849
#> [242,] 41.5371219 9.9279395
#> [243,] 14.7064100 38.3103274
#> [244,] 28.4455701 8.9160791
#> [245,] 16.2979110 18.6138135
#> [246,] 29.2629779 30.1999942
#> [247,] 33.0873144 19.4649325
#> [248,] 30.7149494 5.6204693
#> [249,] 44.6549201 1.2464570
#> [250,] 42.3737790 3.8886169