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Cell activities in primate areas F2 and F4 of the monkey during memorized spatial motor task
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- Author:
- No author available
- Journal Title:
- ACTA PHYSIOLOGICA SINICA
- Issue:
- 2
- DOI:
- 10.3321/j.issn:0371-0874.2000.02.005
- Key Word:
- 细胞活动;有序运动;背外侧运动前皮层;腹外侧运动前皮层;猕猴
Abstract： 用胞外单位放电记录的方法, 研究了猕猴在执行记忆引导的空间有序运动(MSS)时, 大脑皮层弓形沟距背侧F2及腹侧F4区的放电活动.对于以绿色为暗示信号的MSS-G任务, 在暗示期, F2(78.2%)比F4区 (41.5%)有更多的细胞发生放电变化(χ2＝15.2, P<0.005);在图形期, F4(67.9%)比F2区(45.4%)有更多的细胞发生放电变化(χ2＝5.5, P<0.05);在触摸反应期, F4发生放电改变的细胞数(75.5%)显著地多于F2区(27.3%)(χ2＝25.1, P<0.005).对于以红色为暗示信号的MSS-R任务, 在暗示期, F2发生放电改变的细胞数(69.5%)多于F4区(44.6%)(χ2＝7.2, P<0.01);在图形期, F4发生放电改变的细胞数(66.1%)显著地多于F2区(25.4%)(χ2＝19.2, P<0.005);在触摸反应期, F4(67.8%)比F2区(44.1%)有更多的细胞发生放电变化(χ2＝6.6, P<0.05).可见, 无论是MSS-G任务还是MSS-R任务, F2 区比F4 区有更多细胞对MSS任务中的暗示信号发生放电变化, 而F4 区比F2 区细胞更易在图形期和触摸反应期发生放电变化.结果提示, 猕猴弓形沟距周围F2和F4区细胞均参与MSS任务, 但两者的参与方式有所不同.
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