Data measuring the induced levels of electrical potential in a 
mammalian CNS nerve cell following stimulus to "excite" neural 
transmission at a synapse. This data arises in investigations 
of the fundamental stochastic nature of electro-physiological 
communication in nervous systems, at the subcellular level.  
Recordings are changes in electrical potential on the cell body 
of the "receiving" neuron (measured in millivolts). The first 
column "N" gives voltage without stimulation -- measures of 
"resting potential". Variations here are due to physiological 
activity, spontaneous transmission, and experimental noise 
(mainly through the electronic recording and data collection 
process). Treat this as "background noise" in the context of 
which we want to study the "S" column -- Signal data. Each 
signal measurement is the maximum voltage change induced 
following stimulus of neural transmission. 

EPSP (Excitatory post-synaptic potential) data set: 

 $n=349$ measurments on each of N and S

    N       S
  1.0003 -2.133
  0.1708 -2.133
  0.0695 -1.859
 -0.2778 -1.709
 -0.0599 -1.697
 -0.8245 -1.407
  0.2507 -1.318
 -0.3124 -1.257
  0.1387 -1.215
 -0.2831 -1.111
 -0.3892 -1.089
  0.5429 -1.056
 -0.2028 -1.035
 -0.2100 -0.998
 -0.1026 -0.977
 -0.2453 -0.928
 -0.5800 -0.772
 -0.7056 -0.732
 -0.0752 -0.607
  0.2673 -0.583
  0.6352 -0.516
  0.1229 -0.464
  0.1278 -0.403
 -0.3869 -0.397
 -0.5258 -0.375
  0.7517 -0.305
  0.1011 -0.287
 -0.4246 -0.281
  0.1854 -0.269
 -0.1882 -0.253
 -0.0561 -0.244
  0.1490 -0.214
 -0.2471 -0.195
  0.2044 -0.128
  0.3214 -0.079
 -0.3880 -0.064
  0.0334 -0.037
  0.4172 -0.018
 -0.9342 -0.009
 -0.4000  0.043
 -0.1646  0.058
  0.1200  0.089
 -0.1500  0.104
 -0.2761  0.116
  0.2003  0.119
 -0.5261  0.153
 -0.2535  0.153
  1.1745 0.177
 -0.2674 0.186
 -0.0893 0.192
  0.3198 0.192
  0.6501 0.192
 -0.2564 0.229
 -0.0255 0.287
  0.5878 0.314
  0.2107 0.333
 -0.0591 0.333
  0.2799 0.339
 -0.1516 0.363
  0.5759 0.369
  0.0804 0.406
  0.1403 0.418
  0.3989 0.418
  0.3212 0.433
 -0.4991 0.433
  0.2422 0.455
  0.9094 0.470
  0.4581 0.482
  0.0270 0.491
  0.6818 0.500
 -0.2240 0.504
 -0.7186 0.522
  0.0045 0.549
 -0.4030 0.552
 -0.2218 0.565
  0.0368 0.568
 -0.1141 0.589
 -0.2863 0.601
  0.1303 0.616
  0.0375 0.629
  0.4555 0.632
  0.3651 0.638
  0.3746 0.641
  0.5273 0.702
 -0.6071 0.717
 -0.1838 0.732
  0.1309 0.735
 -0.0135 0.766
  0.5557 0.790
  0.3375 0.790
  0.0425 0.790
 -0.3429 0.793
 -0.4786 0.800
 -0.8511 0.809
  0.4446 0.848
 -0.2219 0.854
 -0.0867 0.879
  0.2864 0.891
 -0.1252 0.922
  1.8698 0.925
  0.0790 0.943
 -0.4190 0.952
 -0.8461 0.952
  1.0781 0.964
 -0.2840 0.967
  0.4090 0.974
 -0.5707 0.974
 -0.2180 0.983
 -0.0195 0.989
  0.0548 0.992
 -0.2418 1.013
  0.3092 1.025
 -0.0573 1.050
 -0.0038 1.059
 -1.2444 1.065
 -0.7003 1.068
 -0.1438 1.074
  0.5110 1.080
  0.3004 1.093
 -0.3433 1.108
  0.1598 1.117
  0.0134 1.129
  0.2623 1.132
  0.2663 1.138
 -0.4123 1.144
  0.4290 1.151
 -0.2736 1.169
  0.4986 1.169
 -0.2238 1.172
  0.6308 1.172
 -0.3313 1.175
  0.1532 1.181
  0.0857 1.190
  0.3020 1.193
  0.1288 1.202
  0.3675 1.221
  0.5640 1.270
 -0.0563 1.276
 -1.1690 1.282
 -0.2453 1.282
  0.1581 1.291
  0.4378 1.297
 -0.5827 1.309
  0.0473 1.312
 -0.1883 1.315
 -1.3118 1.324
 -0.2111 1.334
 -0.3251 1.355
 -0.1061 1.364
  0.1078 1.379
 -0.8803 1.385
 -0.0828 1.385
  0.3833 1.398
 -0.6561 1.401
  0.1020 1.404
 -0.2381 1.425
  0.2644 1.431
  0.5880 1.450
  0.5383 1.453
  0.7737 1.456
 -0.0544 1.474
 -0.3070 1.483
  0.1459 1.492
 -0.3247 1.492
  0.5310 1.501
 -0.1992 1.511
  0.5609 1.520
  0.2796 1.529
 -0.2368 1.532
 -0.7853 1.544
 -0.0465 1.547
 -0.0373 1.563
 -0.7490 1.602
 -0.3088 1.605
 -0.1981 1.608
 -0.1943 1.630
 -0.9818 1.630
 -0.3586 1.633
  0.1905 1.654
 -0.0254 1.678
  0.6965 1.700
 -0.7631 1.703
  0.3538 1.749
  0.4014 1.773
 -0.2971 1.788
  0.3103 1.788
  0.1780 1.797
  0.3529 1.813
 -0.3643 1.813
 -0.5212 1.822
  0.2775 1.840
  0.2253 1.849
 -0.6687 1.865
 -0.1755 1.889
  0.1043 1.889
 -0.3739 1.895
  0.1709 1.904
  0.9573 1.910
 -0.3272 1.923
 -0.7754 1.929
  0.3505 1.929
 -0.2413 1.935
  0.0107 1.938
 -1.3154 1.962
  0.3296 1.962
  0.0569 1.978
 -0.7017 1.984
 -0.0825 1.984
 -0.3963 1.999
 -0.4247 2.011
  0.1070 2.014
  0.5285 2.023
  0.0088 2.032
  0.7770 2.039
 -0.1163 2.042
  0.2805 2.045
 -0.2193 2.051
  0.0318 2.057
 -0.2375 2.066
  0.0749 2.066
  0.0165 2.069
 -0.0288 2.081
 -0.2312 2.087
 -0.3399 2.109
 -0.2712 2.124
 -0.8379 2.127
  0.6223 2.127
  0.0237 2.133
 -0.2933 2.142
 -0.6658 2.145
 -0.4485 2.151
 -0.4493 2.151
 -0.6387 2.155
 -0.5031 2.158
  0.0480 2.158
  0.1576 2.161
 -0.4507 2.167
 -0.3068 2.188
  0.0847 2.191
  0.2266 2.203
 -0.1862 2.213
  0.1352 2.225
  0.1319 2.231
  0.5300 2.246
  0.3327 2.246
 -0.4755 2.255
  0.4452 2.255
  0.1338 2.258
 -0.4588 2.261
 -0.5864 2.271
  0.0544 2.271
  0.0358 2.298
 -0.1613 2.301
  0.0434 2.313
 -0.5081 2.322
  0.4922 2.335
  0.5112 2.353
 -0.5071 2.353
  0.1363 2.356
 -0.3314 2.359
  0.4310 2.362
  0.1739 2.374
 -0.4849 2.386
  0.4829 2.386
 -0.4261 2.393
 -0.3327 2.405
  0.3384 2.408
  0.7466 2.411
  0.1964 2.429
 -0.0915 2.432
 -0.4897 2.438
 -0.7342 2.441
  0.0457 2.441
 -0.0296 2.444
 -0.1562 2.493
 -0.2327 2.509
 -0.1752 2.527
  0.3185 2.545
 -0.2095 2.557
 -0.2497 2.560
 -1.2052 2.560
  0.8250 2.567
  0.1052 2.570
  0.0043 2.588
  0.0324 2.631
 -0.1316 2.634
  0.6089 2.634
  0.5535 2.646
  0.8097 2.649
 -0.2189 2.689
 -0.2428 2.695
  0.0867 2.701
 -0.2877 2.734
 -0.1153 2.737
 -0.1473 2.744
  0.5466 2.762
  0.2291 2.765
 -0.5260 2.768
  0.1377 2.783
 -0.0739 2.792
  0.2758 2.811
 -0.5755 2.814
 -0.1822 2.832
  0.2652 2.838
 -0.5193 2.847
  0.1669 2.856
 -0.4217 2.863
  0.1287 2.890
 -0.5474 2.893
 -0.1792 2.899
  0.7462 2.911
 -0.4924 2.924
 -0.1862 2.933
 -0.8852 2.939
 -0.2776 2.942
 -0.7475 2.966
 -0.2044 2.972
 -0.0308 3.006
  0.4023 3.043
  0.3765 3.061
 -0.5792 3.082
  0.3304 3.152
 -0.3115 3.162
 -0.1951 3.171
 -0.1542 3.177
  0.7835 3.201
  0.2612 3.229
  0.4934 3.244
  0.3086 3.244
 -0.2819 3.320
  0.1966 3.339
  0.3660 3.506
  0.4680 3.543
  0.0701 3.632
  0.3407 3.711
  0.1447 3.717
 -0.3829 3.970
 -0.6550 3.979
 -0.1306 4.086
 -0.1121 4.150
 -0.3757 4.309
 -0.2434 4.745
  0.8633 5.035
 -0.3546 7.959
 -0.1350 8.148
  0.1764 8.359
 -0.0850 8.578
  0.1403 9.094
 -0.5702 9.494