Muscimol-induced inactivation of the anterior cingulate cortex does not impair trace fear conditioning in the rat.

Muscimol-induced inactivation of the anterior cingulate cortex does not impair trace fear conditioning in the rat.
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DOI:
10.1177/0269881120965914
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发表时间:
2020-12
期刊:
Journal of psychopharmacology (Oxford, England)
影响因子:
--
通讯作者:
Cassaday HJ
Cassaday HJ
中科院分区:
其他
文献类型:
--
作者:
Pezze MA;Marshall HJ;Cassaday HJ

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以往的研究表明,痕迹条件反射依赖于前扣带皮层(ACC)。为了进一步研究ACC在微量恐惧条件反射中的作用,对48只大鼠进行了手术准备,在条件反射之前,用生理盐水或62.5或125 μg/侧蝇蕈醇输注,以可逆地抑制ACC。噪声刺激后进行1 mA足电击,在条件抑制程序中,这些事件之间有或没有10秒的跟踪间隔。跟踪条件化组(10秒)比对照条件化组(0秒)表现出更少的测试抑制。与预测相反,蝇蕈醇输注对10秒示踪组中的噪声刺激的抑制没有影响。
Previous studies suggest that trace conditioning depends on the anterior cingulate cortex (ACC). To examine the role of ACC in trace fear conditioning further, 48 rats were surgically prepared for infusion with saline or 62.5 or 125 µg/side muscimol to inactivate ACC reversibly prior to conditioning. A noise stimulus was followed by a 1 mA footshock, with or without a 10-second trace interval between these events in a conditioned suppression procedure. The trace-conditioned groups (10 seconds) showed less test suppression than the control-conditioned groups (0 seconds). Counter to prediction, there was no effect of muscimol infusion on suppression to the noise stimulus in the 10-second trace groups.
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发表时间: 2000
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