Brown G E, Anderson C L, Scruggs J L
Department of Psychology, University of Tennessee, Martin 38238.
Psychol Rep. 1994 Jun;74(3 Pt 1):1051-7. doi: 10.2466/pr0.1994.74.3.1051.
For 3 consecutive days cockroaches (Periplaneta americana) received escapable, inescapable, or no shock in an escape task. 24 hr. later minimum shock which initiated movement was identified. Reliably higher shocks were needed to initiate movement in the inescapably shocked roaches. In a second experiment the analgesia induced by inescapable shock was blocked by the opiate antagonist naloxone. The results are discussed in relation to the escape deficit and analgesia commonly seen following exposure to inescapable shock in a variety of species.
连续3天，让蟑螂（美洲大蠊）在一项逃避任务中接受可逃避电击、不可逃避电击或无电击。24小时后，确定引发蟑螂移动所需的最小电击强度。不可逃避电击组的蟑螂引发移动需要可靠地更高强度的电击。在第二项实验中，不可逃避电击诱导的镇痛作用被阿片拮抗剂纳洛酮阻断。结合各种物种暴露于不可逃避电击后常见的逃避缺陷和镇痛作用对结果进行了讨论。
