CA1 pyramidal neuron: effects of Lamotrigine on dendritic excitability (Poolos et al 2002)

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Accession:9769
NEURON mod files from N. Poolos, M. Migliore, and D. Johnston, Nature Neuroscience (2002). The experimental and modeling results in this paper demonstrate for the first time that neuronal excitability can be altered by pharmaceuticals acting selectively on dendrites, and suggest an important role for Ih in controlling dendritic excitability and epileptogenesis.
Reference:
1 . Poolos NP, Migliore M, Johnston D (2002) Pharmacological upregulation of h-channels reduces the excitability of pyramidal neuron dendrites. Nat Neurosci 5:767-74 [PubMed]
Citations  Citation Browser
Model Information (Click on a link to find other models with that property)
Model Type: Neuron or other electrically excitable cell;
Brain Region(s)/Organism:
Cell Type(s): Hippocampus CA1 pyramidal GLU cell;
Channel(s): I Na,t; I A; I K; I h;
Gap Junctions:
Receptor(s): AMPA;
Gene(s):
Transmitter(s):
Simulation Environment: NEURON;
Model Concept(s): Ion Channel Kinetics; Active Dendrites; Detailed Neuronal Models; Action Potentials;
Implementer(s): Migliore, Michele [Michele.Migliore at Yale.edu];
Search NeuronDB for information about:  Hippocampus CA1 pyramidal GLU cell; AMPA; I Na,t; I A; I K; I h;
/
lamotrigine
readme.txt
h.mod
kadist.mod *
kaprox.mod *
kdrca1.mod *
na3n.mod
naxn.mod
netstimm.mod
lamotrigine.hoc
mosinit.hoc
n160_mod.nrn *
                            
/* apical[117] diam changed from 1 to 0.4 */
/* added axon */
/* lambda checked */
{NumSoma=13 NumApical=127 NumBasal=60 NumAxon=2}
create soma[NumSoma], apical[NumApical], basal[NumBasal], axon[NumAxon]

axon[0]  {nseg=5 diam=1 L=50}
axon[1]  {nseg=10 diam=0.7 L=250}
soma[0]  {nseg=1 diam= 3.4  L= .5  }
soma[1]  {nseg=1 diam= 3.4  L= .1  }
soma[2]  {nseg=1 diam= 5.8  L= .5852348  }
soma[3]  {nseg=1 diam= 7.4  L= 2.362393  }
soma[4]  {nseg=1 diam= 8.4  L= 1.030922  }
soma[5]  {nseg=1 diam= 9  L= 5.08973  }
soma[6]  {nseg=1 diam= 8.4  L= 2.161421  }
soma[7]  {nseg=1 diam= 7.4  L= 1.391761  }
soma[8]  {nseg=1 diam= 7  L= .7244999  }
soma[9]  {nseg=1 diam= 6.8  L= 1.021421  }
soma[10]  {nseg=1 diam= 5.8  L= .8354636  }
soma[11]  {nseg=1 diam= 4.8  L= .6500001  }
soma[12]  {nseg=1 diam= 4.2  L= 1.947434  }

apical[0]   {nseg=1 diam= 3.8  L= 2.715308  }
apical[1]   {nseg=1 diam= 3.6  L= 5.401713  }
apical[2]   {nseg=1 diam= 3  L= 3.876953  }
apical[3]   {nseg=1 diam= 3  L= 4.32302  }
apical[4]   {nseg=1 diam= 2.2  L= 9.503437  }
apical[5]   {nseg=2 diam= 2  L= 45.0123  }
apical[6]   {nseg=1 diam= 2  L= 31.20716  }
apical[7]   {nseg=1 diam= 2  L= 22.61171  }
apical[8]   {nseg=2 diam= 2  L= 37.90814  }
apical[9]   {nseg=1 diam= 2  L= 1.899714  }
apical[10]  {nseg=1 diam= 2  L= 2.305321  }
apical[11]  {nseg=1 diam= 2  L= 3.767573  }
apical[12]  {nseg=2 diam= 2  L= 33.49711  }
apical[13]  {nseg=10 diam= 2  L= 70.09814  }
apical[14]  {nseg=2 diam= 2  L= 40.81264  }
apical[15]  {nseg=1 diam= 2  L= 15.2801  }
apical[16]  {nseg=1 diam= 2  L= 17.47857  }
apical[17]  {nseg=8 diam= 1  L= 108.7753  }
apical[18]  {nseg=1 diam= .8  L= 10.96036  }
apical[19]  {nseg=2 diam= .8  L= 16.21915  }
apical[20]  {nseg=2 diam= .4  L= 26.14653  }
apical[21]  {nseg=6 diam= .4  L= 119.6609  }
apical[22]  {nseg=3 diam= .4  L= 39.18561  }
apical[23]  {nseg=3 diam= .4  L= 34.66425  }
apical[24]  {nseg=2 diam= .4  L= 31.36501  }
apical[25]  {nseg=2 diam= .4  L= 29.33217  }
apical[26]  {nseg=2 diam= 2  L= 31.1963  }
apical[27]  {nseg=4 diam= 1.4  L= 40.56636  }
apical[28]  {nseg=1 diam= 1.4  L= 4.73629  }
apical[29]  {nseg=5 diam= .8  L= 57.43425  }
apical[30]  {nseg=1 diam= .4  L= 21.68407  }
apical[31]  {nseg=1 diam= .4  L= 20.0452  }
apical[32]  {nseg=3 diam= .4  L= 64.84853  }
apical[33]  {nseg=3 diam= .4  L= 58.52066  }
apical[34]  {nseg=10 diam= .4  L= 230.365  }
apical[35]  {nseg=2 diam= .4  L= 37.58863  }
apical[36]  {nseg=4 diam= .4  L= 77.22144  }
apical[37]  {nseg=5 diam= .4  L= 112.0059  }
apical[38]  {nseg=2 diam= .4  L= 37.58242  }
apical[39]  {nseg=8 diam= .8  L= 89.90406  }
apical[40]  {nseg=1 diam= .8  L= 5.726318  }
apical[41]  {nseg=1 diam= .8  L= 1.514942  }
apical[42]  {nseg=2 diam= .8  L= 23.88437  }
apical[43]  {nseg=1 diam= .4  L= 3.340797  }
apical[44]  {nseg=1 diam= .4  L= 3.250262  }
apical[45]  {nseg=4 diam= .4  L= 86.1567  }
apical[46]  {nseg=3 diam= .4  L= 46.10009  }
apical[47]  {nseg=1 diam= .4  L= 23.62396  }
apical[48]  {nseg=4 diam= .4  L= 78.09839  }
apical[49]  {nseg=2 diam= .4  L= 41.05293  }
apical[50]  {nseg=3 diam= .4  L= 64.45201  }
apical[51]  {nseg=6 diam= .4  L= 135.1048  }
apical[52]  {nseg=4 diam= .4  L= 70.09399  }
apical[53]  {nseg=1 diam= .4  L= 11.29383  }
apical[54]  {nseg=3 diam= .4  L= 57.12379  }
apical[55]  {nseg=3 diam= .4  L= 51.23798  }
apical[56]  {nseg=1 diam= .4  L= .226719  }
apical[57]  {nseg=2 diam= .4  L= 42.9783  }
apical[58]  {nseg=6 diam= .4  L= 130.2097  }
apical[59]  {nseg=2 diam= .4  L= 26.79343  }
apical[60]  {nseg=5 diam= .4  L= 125.4406  }
apical[61]  {nseg=2 diam= .4  L= 32.70949  }
apical[62]  {nseg=2 diam= .4  L= 46.61235  }
apical[63]  {nseg=3 diam= .4  L= 55.72121  }
apical[64]  {nseg=5 diam= .4  L= 116.3788  }
apical[65]  {nseg=1 diam= .4  L= 13.57025  }
apical[66]  {nseg=6 diam= .4  L= 118.638  }
apical[67]  {nseg=1 diam= .4  L= 24.19888  }
apical[68]  {nseg=4 diam= .4  L= 96.23538  }
apical[69]  {nseg=3 diam= .4  L= 59.93812  }
apical[70]  {nseg=2 diam= .4  L= 64.90414  }
apical[71]  {nseg=1 diam= .4  L= .365519  }
apical[72]  {nseg=5 diam= .4  L= 118.724  }
apical[73]  {nseg=1 diam= .4  L= 5.153612  }
apical[74]  {nseg=7 diam= .4  L= 159.0847  }
apical[75]  {nseg=3 diam= .4  L= 65.16338  }
apical[76]  {nseg=3 diam= .8  L= 32.91693  }
apical[77]  {nseg=4 diam= .4  L= 84.05488  }
apical[78]  {nseg=3 diam= .8  L= 49.03632  }
apical[79]  {nseg=3 diam= .4  L= 65.3413  }
apical[80]  {nseg=7 diam= .4  L= 144.8597  }
apical[81]  {nseg=1 diam= .4  L= 2.782626  }
apical[82]  {nseg=1 diam= .4  L= 10.63182  }
apical[83]  {nseg=1 diam= .4  L= 14.79619  }
apical[84]  {nseg=1 diam= .4  L= 24.52155  }
apical[85]  {nseg=1 diam= .4  L= 19.95786  }
apical[86]  {nseg=1 diam= .4  L= 22.937  }
apical[87]   {nseg=1 diam= .4  L= 29.18237  }
apical[88]   {nseg=4 diam= .4  L= 93.45203  }
apical[89]   {nseg=3 diam= .4  L= 82.16525  }
apical[90]   {nseg=2 diam= 1  L= 28.88242  }
apical[91]   {nseg=1 diam= 1  L= 3.312038  }
apical[92]   {nseg=2 diam= 1  L= 31.43214  }
apical[93]   {nseg=4 diam= 1  L= 65.21848  }
apical[94]   {nseg=4 diam= 1  L= 65.93275  }
apical[95]   {nseg=1 diam= .4  L= 2.210091  }
apical[96]   {nseg=4 diam= .4  L= 80.05907  }
apical[97]   {nseg=1 diam= .4  L= 12.09364  }
apical[98]   {nseg=2 diam= .4  L= 40.26765  }
apical[99]   {nseg=2 diam= .4  L= 51.40726  }
apical[100]  {nseg=5 diam= .4  L= 113.2667  }
apical[101]  {nseg=6 diam= .4  L= 149.6538  }
apical[102]  {nseg=12 diam= .4  L= 271.828  }
apical[103]  {nseg=1 diam= .8  L= 19.2613  }
apical[104]  {nseg=5 diam= .4  L= 94.12336  }
apical[105]  {nseg=8 diam= .4  L= 170.9137  }
apical[106]  {nseg=1 diam= .8  L= 5.102267  }
apical[107]  {nseg=1 diam= .8  L= 10.26147  }
apical[108]  {nseg=6 diam= .4  L= 117.1293  }
apical[109]  {nseg=2 diam= .8  L= 30.43381  }
apical[110]  {nseg=4 diam= .4  L= 80.42423  }
apical[111]  {nseg=10 diam= .4  L= 202.9251  }
apical[112]  {nseg=7 diam= .4  L= 155.1176  }
apical[113]  {nseg=1 diam= 1.4  L= 11.20985  }
apical[114]  {nseg=1 diam= 1.4  L= 8.052182  }
apical[115]  {nseg=1 diam= .4  L= 17.14739  }
apical[116]  {nseg=1 diam= .4  L= 17.07239  }
apical[117]  {nseg=1 diam= .4  L= 3.802383  }
apical[118]  {nseg=4 diam= .4  L= 79.13516  }
apical[119]  {nseg=7 diam= .4  L= 132.4294  }
apical[120]  {nseg=1 diam= .8  L= 7.493482  }
apical[121]  {nseg=1 diam= .8  L= 16.02206  }
apical[122]  {nseg=1 diam= .4  L= 2.194287  }
apical[123]  {nseg=1 diam= .4  L= 14.77226  }
apical[124]  {nseg=4 diam= .4  L= 85.29885  }
apical[125]  {nseg=5 diam= .4  L= 108.0732  }
apical[126]  {nseg=4 diam= .4  L= 89.57475  }
basal[0]  {nseg=1 diam= .8  L= 2.888482  }
basal[1]  {nseg=1 diam= .8  L= 12.67608  }
basal[2]  {nseg=1 diam= .4  L= 6.226819  }
basal[3]  {nseg=2 diam= .4  L= 28.07395  }
basal[4]  {nseg=1 diam= .4  L= 19.26636  }
basal[5]  {nseg=1 diam= .4  L= 13.94479  }
basal[6]  {nseg=5 diam= .4  L= 110.2079  }
basal[7]  {nseg=4 diam= .4  L= 75.98547  }
basal[8]  {nseg=8 diam= .4  L= 153.798  }
basal[9]  {nseg=4 diam= .4  L= 91.32814  }
basal[10]  {nseg=3 diam= .4  L= 72.40762  }
basal[11]  {nseg=3 diam= .4  L= 68.55269  }
basal[12]  {nseg=1 diam= .8  L= 16.80424  }
basal[13]  {nseg=1 diam= .8  L= 14.56381  }
basal[14]  {nseg=1 diam= .4  L= .4899998  }
basal[15]  {nseg=1 diam= .4  L= 5.744193  }
basal[16]  {nseg=4 diam= .4  L= 116.2063  }
basal[17]  {nseg=3 diam= .4  L= 60.7986  }
basal[18]  {nseg=7 diam= .4  L= 140.8884  }
basal[19]  {nseg=4 diam= .4  L= 82.97742  }
basal[20] {nseg=2 diam= .4  L= 36.26253  }
basal[21] {nseg=5 diam= .4  L= 100.4919  }
basal[22] {nseg=3 diam= .4  L= 72.16766  }
basal[23] {nseg=1 diam= 1  L= 12.02422  }
basal[24] {nseg=1 diam= .8  L= 4.843154  }
basal[25] {nseg=1 diam= .8  L= 3.307597  }
basal[26] {nseg=1 diam= .4  L= 11.31487  }
basal[27] {nseg=1 diam= .4  L= 25.26186  }
basal[28] {nseg=1 diam= .4  L= 26.09189  }
basal[29] {nseg=3 diam= .4  L= 73.88529  }
basal[30] {nseg=3 diam= .4  L= 69.03699  }
basal[31] {nseg=4 diam= .4  L= 81.94038  }
basal[32] {nseg=7 diam= .4  L= 157.9888  }
basal[33]  {nseg=1 diam= .4  L= 12.65634  }
basal[34]  {nseg=2 diam= .4  L= 47.59445  }
basal[35]  {nseg=4 diam= .4  L= 87.35556  }
basal[36]  {nseg=5 diam= .4  L= 92.50491  }
basal[37]  {nseg=1 diam= .4  L= 21.87688  }
basal[38]  {nseg=4 diam= .4  L= 86.62627  }
basal[39]  {nseg=3 diam= .4  L= 74.35841  }
basal[40]  {nseg=4 diam= .4  L= 92.61662  }
basal[41] {nseg=1 diam= 1  L= 9.526773  }
basal[42] {nseg=1 diam= 1  L= 3.523762  }
basal[43] {nseg=1 diam= .8  L= 11.17033  }
basal[44] {nseg=1 diam= .4  L= 5.654395  }
basal[45] {nseg=1 diam= .4  L= 10.01039  }
basal[46] {nseg=1 diam= .4  L= 21.26989  }
basal[47] {nseg=2 diam= .4  L= 38.8982  }
basal[48] {nseg=6 diam= .4  L= 125.4449  }
basal[49] {nseg=7 diam= .4  L= 137.2615  }
basal[50] {nseg=3 diam= .4  L= 66.48241  }
basal[51]  {nseg=1 diam= 1  L= .5340415  }
basal[52]  {nseg=1 diam= 1  L= 7.411953  }
basal[53]  {nseg=4 diam= .4  L= 80.27492  }
basal[54]  {nseg=1 diam= .8  L= 11.25394  }
basal[55]  {nseg=1 diam= .4  L= 7.328401  }
basal[56]  {nseg=5 diam= .4  L= 100.9536  }
basal[57]  {nseg=2 diam= .4  L= 32.70675  }
basal[58]  {nseg=8 diam= .4  L= 165.4767  }
basal[59]  {nseg=8 diam= .4  L= 161.9148  }

soma[0]  {connect soma[1]  (0), 1
         connect basal[0] (0),0
	 connect basal[20] (0),0
	 connect basal[23] (0),0
	 connect basal[41] (0),0}

soma[1]  connect soma[2]  (0), 1
soma[2]  {connect soma[3]  (0), 1
         connect axon[0](0),0.5}
axon[0]  connect axon[1](0),1
soma[3]  connect soma[4]  (0), 1
soma[4]  connect soma[5]  (0), 1
soma[5]  connect soma[6]  (0), 1
soma[6]  connect soma[7]  (0), 1
soma[7]  connect soma[8]  (0), 1
soma[8]  connect soma[9]  (0), 1
soma[9]  connect soma[10]  (0), 1
soma[10]  connect soma[11]  (0), 1
soma[11]  connect soma[12]  (0), 1

soma[12]  connect apical[0]  (0), 1

apical[0]   connect apical[ 1]  (0), 1
apical[1]   connect apical[ 2]  (0), 1
apical[2]  {connect apical[ 3]  (0), 1
connect apical[121]  (0), 1}
apical[3]   connect apical[ 4]  (0), 1
apical[4]   connect apical[ 5]  (0), 1
apical[5]  {connect apical[ 6]  (0), 1
connect apical[113]  (0), 1}
apical[6]  {connect apical[ 7]  (0), 1
connect apical[112]  (0), 1}
apical[7]  {connect apical[ 8]  (0), 1
connect apical[106]  (0), 1}
apical[8]  {connect apical[ 9]  (0), 1
connect apical[105]  (0), 1}
apical[9]  {connect apical[ 10] (0), 1
connect apical[103]  (0), 1}
apical[10] {connect apical[ 11] (0), 1
connect apical[102]  (0), 1}
apical[11] {connect apical[ 12] (0), 1
connect apical[101]  (0), 1}
apical[12] {connect apical[ 13] (0), 1
connect apical[90]   (0), 1}
apical[13] {connect apical[ 14] (0), 1
connect apical[78]  (0), 1}
apical[14] {connect apical[ 15] (0), 1
connect apical[76]  (0), 1}
apical[15] {connect apical[ 16] (0), 1
connect apical[64]  (0), 1}
apical[16] {connect apical[ 17] (0), 1
connect apical[26]  (0), 1}
apical[17]  connect apical[ 18] (0), 1
apical[18] {connect apical[ 19] (0), 1
connect apical[21]  (0), 1}
apical[19]  connect apical[ 20] (0), 1
apical[21] {connect apical[ 22] (0), 1
connect apical[23]  (0), 1}
apical[23] {connect apical[ 24] (0), 1
connect apical[25]  (0), 1}
apical[26]  connect apical[ 27] (0), 1
apical[27] {connect apical[ 28] (0), 1
connect apical[39]  (0), 1}
apical[28]  connect apical[ 29] (0), 1
apical[29]  connect apical[ 30] (0), 1
apical[30] {connect apical[ 31] (0), 1
connect apical[38]  (0), 1}
apical[31] {connect apical[ 32] (0), 1
connect apical[35]  (0), 1}
apical[32] {connect apical[ 33] (0), 1
connect apical[34]  (0), 1}
apical[35] {connect apical[ 36] (0), 1
connect apical[37]  (0), 1}
apical[39] {connect apical[ 40] (0), 1
connect apical[59]  (0), 1}
apical[40] {connect apical[ 41] (0), 1
connect apical[50]  (0), 1}
apical[41] {connect apical[ 42] (0), 1
connect apical[49]  (0), 1}
apical[42]  connect apical[ 43] (0), 1
apical[43] {connect apical[ 44] (0), 1
connect apical[48]  (0), 1}
apical[44] {connect apical[ 45] (0), 1
connect apical[47]  (0), 1}
apical[45]  connect apical[ 46] (0), 1
apical[50] {connect apical[ 51] (0), 1
connect apical[52]  (0), 1}
apical[52] {connect apical[ 53] (0), 1
connect apical[56]  (0), 1}
apical[53] {connect apical[ 54] (0), 1
connect apical[55]  (0), 1}
apical[56] {connect apical[ 57] (0), 1
connect apical[58]  (0), 1}
apical[59] {connect apical[ 60] (0), 1
connect apical[61]  (0), 1}
apical[61] {connect apical[ 62] (0), 1
connect apical[63]  (0), 1}
apical[64] {connect apical[ 65] (0), 1
connect apical[72]  (0), 1}
apical[65] {connect apical[ 66] (0), 1
connect apical[71]  (0), 1}
apical[66] {connect apical[ 67] (0), 1
connect apical[70]  (0), 1}
apical[67] {connect apical[ 68] (0), 1
connect apical[69]  (0), 1}
apical[72]  connect apical[ 73] (0), 1
apical[73] {connect apical[ 74] (0), 1
connect apical[75]  (0), 1}
apical[76]  connect apical[ 77] (0), 1
apical[78] {connect apical[ 79] (0), 1
connect apical[80]  (0), 1}
apical[80] {connect apical[ 81] (0), 1
connect apical[89]   (0), 1}
apical[81] {connect apical[ 82] (0), 1
connect apical[88]   (0), 1}
apical[82] {connect apical[ 83] (0), 1
connect apical[87]   (0), 1}
apical[83] {connect apical[ 84] (0), 1
connect apical[85]  (0), 1}
apical[85]  connect apical[ 86] (0), 1
apical[90]  {connect apical[ 91]  (0), 1
connect apical[100]  (0), 1}
apical[91]  {connect apical[ 92]  (0), 1
connect apical[97]   (0), 1}
apical[92]  {connect apical[ 93]  (0), 1
connect apical[96]   (0), 1}
apical[93]  {connect apical[ 94]  (0), 1
connect apical[95]   (0), 1}
apical[97]  {connect apical[ 98]  (0), 1
connect apical[99]   (0), 1}
apical[103]  connect apical[ 104] (0), 1
apical[106] {connect apical[ 107] (0), 1
connect apical[109]  (0), 1}
apical[107]  connect apical[ 108] (0), 1
apical[109] {connect apical[ 110] (0), 1
connect apical[111]  (0), 1}
apical[113] {connect apical[ 114] (0), 1
connect apical[120]  (0), 1}
apical[114]  connect apical[ 115] (0), 1
apical[115] {connect apical[ 116] (0), 1
connect apical[119]  (0), 1}
apical[116]  connect apical[ 117] (0), 1
apical[117]  connect apical[ 118] (0), 1
apical[121]  connect apical[ 122] (0), 1
apical[122] {connect apical[ 123] (0), 1
connect apical[126]  (0), 1}
apical[123] {connect apical[ 124] (0), 1
connect apical[125]  (0), 1}
basal[0] {connect basal[1]  (0), 1
connect basal[12]  (0), 1}
basal[1] {connect basal[2]  (0), 1
connect basal[9]  (0), 1}
basal[2] {connect basal[3]  (0), 1
connect basal[8]  (0), 1}
basal[3] {connect basal[4]  (0), 1
connect basal[5]  (0), 1}
basal[5] {connect basal[6]  (0), 1
connect basal[7]  (0), 1}
basal[9] {connect basal[10]  (0), 1
connect basal[11]  (0), 1}
basal[12] {connect basal[13]  (0), 1
connect basal[19]  (0), 1}
basal[13]  connect basal[14]  (0), 1
basal[14] {connect basal[15]  (0), 1
connect basal[18]  (0), 1}
basal[15] {connect basal[16]  (0), 1
connect basal[17]  (0), 1}
basal[20] {connect basal[ 21] (0), 1
connect basal[22] (0), 1}
basal[23] {connect basal[ 24] (0), 1
connect basal[38]  (0), 1}
basal[24] {connect basal[ 25] (0), 1
connect basal[33]  (0), 1}
basal[25] connect basal[ 26] (0), 1
basal[26] {connect basal[ 27] (0), 1
connect basal[32] (0), 1}
basal[27] {connect basal[ 28] (0), 1
connect basal[31] (0), 1}
basal[28] {connect basal[ 29] (0), 1
connect basal[30] (0), 1}
basal[33] {connect basal[ 34] (0), 1
connect basal[37]  (0), 1}
basal[34] {connect basal[ 35] (0), 1
connect basal[36]  (0), 1}
basal[38] {connect basal[ 39] (0), 1
connect basal[40]  (0), 1}
basal[41] {connect basal[ 42] (0), 1
connect basal[59]  (0), 1}
basal[42] {connect basal[ 43] (0), 1
connect basal[51]  (0), 1}
basal[43] connect basal[ 44] (0), 1
basal[44] {connect basal[ 45] (0), 1
connect basal[50] (0), 1}
basal[45] {connect basal[ 46] (0), 1
connect basal[49] (0), 1}
basal[46] {connect basal[ 47] (0), 1
connect basal[48] (0), 1}
basal[51] {connect basal[ 52] (0), 1
connect basal[54]  (0), 1}
basal[52]  connect basal[ 53] (0), 1
basal[54] {connect basal[ 55] (0), 1
connect basal[58]  (0), 1}
basal[55] {connect basal[ 56] (0), 1
connect basal[57]  (0), 1}