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本实验观察了大鼠黑质网状部（ＳＮＲ）微量注射ＧＡＢＡ０．２μｌ（１Ｍ）对，黑质Ⅰ、Ⅱ型神经元单位放电的影响。结果如下：（１）在记录的２５个Ⅰ型神经元中，有１７个单位（６８．００％）自发放电频率降低范围８８．４１％－１００．００％，平均降低９６．６２％±４．０１％。（２）在记录的３６个Ⅱ型神经元中，有２７个单位（７９．４１％）自发放电频率降低范围４３．５６％－９９．３５％，平均降低７８．６９％±１０．１３％。结果表明，黑质网状部微量注射ＧＡＢＡ能使大多数黑质Ⅰ、Ⅱ型神经元产生明显的抑制作用。
In this study, we observed the effects of microinjection of GABA0.2μl (1M) into substantia nigra mesh (SNR) on the discharges of substantia nigra type I and II neurons. The results were as follows: (1) Among the 25 type Ⅰ neurons recorded, 17 units (68.00%) had a spontaneous firing frequency reduction of 88.41% -100.00% with an average reduction of 96.62% ± 4 .01%. (2) Among the 36 type Ⅱ neurons recorded, 27 units (79.41%) had a spontaneous firing frequency reduction range of 43.56% -99.35% with an average reduction of 78.69% ± 10.13% . The results showed that microinjection of GABA into substantia nigra reticulae could significantly inhibit the majority of substantia nigra neurons of Type I and Type II.