在使用可卡因的个体中,可卡因狂醉的实验室模型中,冲动反应增加:初步研究
Nehal P Vadhan1,2,3,4, Sean P Madden1,2,3,4, Majnu John1,2,3,4
1Northwell, New Hyde Park, NY, USA.
概括
过度使用可卡因会损害经验丰富的使用者的反应抑制,影响驾驶等行为. 认知表现因可卡因剂量和服用方法而异.
科学领域:
- 神经科学是一个神经科学.
- 心理药理学 心理药理学
- 认知心理学 认知心理学
背景情况:
- 过度使用可卡因与认知缺陷有关.
- 之前的研究表明,在实验室中服用可卡因时,可能会有潜在的认知增强.
研究的目的:
- 为了研究在实验室管理过度使用可卡因期间的认知表现.
- 评估不同数量的可卡因在受控环境中对认知功能的影响.
主要方法:
- 十二名健康的,经常使用可卡因的人参加了一项对抗平衡的研究.
- 参与者在两个过度可卡因服用阶段和一个戒断阶段进行了每晚的认知测试.
- 可卡因是通过吸烟,每天高达12次 (25毫克/次) 的管理,无论是实验者或自我管理.
主要成果:
- 与戒断和第二次狂欢阶段 (狂欢2) 相比,注意力响应抑制在最初的狂欢阶段 (狂欢1) 显著下降.
- 自给组在Binge 2期间显示出减少的运动跟踪,与实验者-给药组不同.
- 在即时记忆或精神运动速度方面没有观察到显著的损伤.
结论:
- 过度使用可卡因会影响经验丰富的使用者对可卡因反应的抑制.
- 即时记忆和精神运动速度没有受到显著影响.
- 抑制控制障碍对需要这种控制的活动,如驾驶,在中毒期间具有关键影响.
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