Colombo M, Cawley S, Broadbent N
Department of Psychology, University of Otago, Dunedin, New Zealand.
Q J Exp Psychol B. 1997 May;50(2):172-89. doi: 10.1080/713932649.
Two experiments were conducted to examine the effects of bilateral hippocampus (Hp) and area parahippocampalis (APH) lesions in pigeons on the acquisition of a visual and spatial task. In Experiment 1, pigeons were trained on three successive six-pair concurrent discrimination tasks, each using a novel set of stimuli. There was no difference between control unoperated pigeons and Hp-APH pigeons in terms of the number of sessions required to learn either the first, second, or third concurrent discrimination task. In Experiment 2, the same pigeons were trained on an open-field spatial task similar in many ways to the radial-arm maze task used with rats. In contrast to the absence of impairments on the visual concurrent discrimination task, pigeons with Hp-APH lesions were severely impaired on the acquisition of the spatial task. These findings support the view that the Hp-APH in pigeons is important for the processing of spatial, rather than visual information.
进行了两项实验，以检验鸽子双侧海马体（Hp）和海马旁区域（APH）损伤对视觉和空间任务习得的影响。在实验1中，鸽子接受了三个连续的六对同时辨别任务的训练，每个任务使用一组新的刺激。在学习第一个、第二个或第三个同时辨别任务所需的训练次数方面，未手术的对照鸽子和Hp - APH鸽子之间没有差异。在实验2中，同样的鸽子接受了一项旷场空间任务的训练，该任务在许多方面与用于大鼠的放射状臂迷宫任务相似。与视觉同时辨别任务未出现损伤形成对比的是，患有Hp - APH损伤的鸽子在空间任务的习得方面严重受损。这些发现支持了这样一种观点，即鸽子的Hp - APH对于空间信息而非视觉信息的处理很重要。
