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Table 1 Recording sites and distributions of sampled neurons in thalamic ventral posteriorlateral regions following T13 spinal hemisection

From: Bilateral hyperexcitability of thalamic VPL neurons following unilateral spinal injury in rats

 

Recording site (mm)

Distributions (%)

From the bregmaa

From the midlineb

From the surfacec

Sham (numbers)

  LT (16)

2.7 ± 0.142

3.2 ± 0.06

5.3 ± 0.08

51.61

  HT (3)

2.2 ± 0.321

3.5 ± 0.145

5.8 ± 0.152

9.68

  WDR (12)

2.3 ± 0.109

3.4 ± 0.05

5.5 ± 0.108

38.91

Hemisection (numbers)

 Contralateral

  LT (13)

2.8 ± 0.04

3.3 ± 0.05

5.3 ± 0.08

44.83

  HT (–)

0

  WDR (16)

2.8 ± 0.05

3.2 ± 0.06

5.1 ± 0.06

55.17

 Ipsilateral

  LT (10)

2.9 ± 0.04

3.1 ± 0.04

5.5 ± 0.08

34.48

  HT (–)

0

  WDR (19)

2.8 ± 0.03

3.1 ± 0.05

5.3 ± 0.06

65.52

  1. For the recording of thalamic ventral posteriorlateral (VPL) neurons, 31 neurons from sham controls were sampled and 58 neurons from hemisected rats. In sham controls, there were large populations of low threshold (LT) neurons (51.6%), whereas rats with hemisection had large populations of wide dynamic range (WDR) neurons in both ipsilateral (65.5%) and contralateral (55.2%) sides. High threshold (HT) neurons were not observed in rats with hemisection, although three HT neurons were recorded in sham controls
  2. aPosteriorly from the bregma
  3. bLaterally from the midline
  4. cDepth from the surface