Perceptual priming in schizophrenia evaluated by word fragment and word stem completion
Perceptual priming in schizophrenia evaluated by word fragment and word stem completion
复制标题
DOI：
10.1016/j.psychres.2011.08.008
复制
发表时间：
2011-12-30
影响因子：
11.3
通讯作者：
Fuentes, Inma
中科院分区：
文献类型：
--
作者：
Jose Soler, Maria;Carlos Ruiz, Juan;Fuentes, Inma
内隐记忆似乎在精神分裂症中作为一个整体被保留下来，但概念和知觉任务之间以及准确性和反应时间测量之间出现了分离。目前的研究已经揭示了一些方法的局限性，迄今为止，许多研究集中在精神分裂症患者的知觉内隐记忆的研究，使用准确性措施。这些研究的审查显示，限制是有关的性能和启动措施的定义不足，缺乏控制的刺激的特点，以及缺乏信息的实验程序中使用的数据收集。此外，在这些研究中使用的任务是词干完成，一个任务，利用知觉和概念的过程。在这里报告的实验中，我们使用一个纯粹的知觉内隐任务和刺激从一个规范的数据库中选择测量知觉内隐记忆的精神分裂症患者。他们的表现与正常参与者进行了比较。32名精神分裂症患者和30名健康对照者被试被要求完成一个词片段完成任务。两组之间的直接比较产生了类似的结果启动，这表明知觉内隐记忆是保存在精神分裂症。(C)2011爱思唯尔爱尔兰有限公司保留所有权利。
Implicit memory seems to be preserved in schizophrenia as a whole, but dissociations between conceptual and perceptual tasks and between accuracy and reaction time measures have appeared. The present research has revealed some methodological limitations in many studies to date that are focused on the study of perceptual implicit memory in schizophrenic patients using accuracy measures. The review of these studies revealed that limitations are related to an inadequate definition of performance and priming measures, a lack of control over the characteristics of the stimuli, and the absence of information on the experimental procedures used in data collection. Moreover, the task used in these studies is word stem completion, a task that makes use of perceptual and conceptual processes. In the experiment reported here we use a pure perceptual implicit task and stimuli selected from a normative database to measure perceptual implicit memory in schizophrenic patients. Their performance was compared with that of normal participants. Thirty-two schizophrenic patients and 30 healthy control participants were administered a word fragment completion task. Direct comparison between the two groups yielded similar results in priming, suggesting that perceptual implicit memory is preserved in schizophrenia. (C) 2011 Elsevier Ireland Ltd. All rights reserved.