table of contents 
Single efferent fibers of the interstitial nucleus of Cajal (NIC) were characterized …
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| TABLE 1. Relationship between the discharge of NIC efferent fibers and parameters of ocular movement
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| A.Position Related |
| Cell Type |
N |
kV, spike·s 1·deg1 |
r |
F0, spikes/s |
CV |
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| Bidirectional |
| Up |
35 |
3.4 ± 1.5 (0.51-6.9) |
0.89 ± 0.12 (0.43-0.99) |
97 ± 25 (46-151) |
0.09 ± 0.06 (0.03-0.27) |
| Down |
31 |
 3.0 ± 2.0 (0.51-10.1) |
0.86 ± 0.14 (0.42-0.99) |
82 ± 30 (29-142) |
0.12 ± 0.07 (0.04-0.32) |
| Unidirectional |
| Up |
12 |
3.1 ± 1.1 (1.9-5.0) |
0.84 ± 0.14 (0.52-0.99) |
74 ± 31 (17-121) |
0.16 ± 0.06 (0.11-0.3) |
| Down |
6 |
2.4 ± 0.6 (1.9-3.4) |
0.88 ± 0.08 (0.75-0.96) |
91 ± 33 (52-131.4) |
0.12 ± 0.05 (0.07-0.19) |
| B.Saccade Related |
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| Cell Type |
N |
RV, spikes/deg |
r |
ns (N) |
Bd/Sd, s/s |
r |
ns (N) |
G(Fm/ m), |
r |
ns (N) |
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spike/s per deg/s |
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| Up |
38 |
0.5 ± 0.3 (0.1-1.4) |
0.81 ± 0.11 (0.56-0.97) |
0 |
0.9 ± 0.2 (0.5-1.2) |
0.84 ± 0.12 (0.53-0.97) |
2 |
0.45 ± 0.36 (0.1-1.9) |
0.71 ± 0.16 (0.33-0.93) |
2 |
| Down |
27 |
0.7 ± 0.5 (0.2-1.3) |
0.75 ± 0.13 (0.52-0.93) |
4 |
0.94 ± 0.2 (0.5-1.2) |
0.87 ± 0.1 (0.64-0.99) |
0 |
0.6 ± 0.3 (0.1-1.0) |
0.73 ± 0.13 (0.46-0.92) |
11 |
| C.Smooth Pursuit Related |
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| Cell Type |
N |
FR/sp, spike/s per deg/s |
r |
ns (N) |
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| Up |
36 |
0.8 ± 0.4 (0.3-2.1) |
0.77 ± 0.15 (0.51-0.95) |
12 |
| Down |
31 |
0.8 ± 0.6 (0.1-2.2) |
0.76 ± 0.16 (0.44-0.97) |
14 |
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| Values are means ± SD, ranges are in parentheses. N, number of units examined; kV, slope of the rate/position curve; r, regression coefficient; F0, firing rate at primary eye position; CV, coefficient of variation of interspike intervals at primary position; RV, slope of the relationship between number of spikes in the burst and vertical saccade size; ns (N), number of units that did not attain statistical significance (P > 0.05); Bd/Sd, slope of the relationship between burst duration (Bd) and saccade duration (Sd); G(Fm/m), slope of the relationship between peak firing rate and peak vertical saccade velocity; FR/sp, slope of the relationship between firing rate (FR) and smooth pursuit vertical eye velocity (sp). |
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