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首页> 外文期刊>Brain and cognition >False memories to emotional stimuli are not equally affected in right- and left-brain-damaged stroke patients
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False memories to emotional stimuli are not equally affected in right- and left-brain-damaged stroke patients

机译：右脑和左脑损伤的中风患者对情绪刺激的错误记忆不会受到同等影响

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Previous research has attributed to the right hemisphere (RH) a key role in eliciting false memories to visual emotional stimuli. These results have been explained in terms of two right-hemisphere properties: (ⅰ) that emotional stimuli are preferentially processed in the RH and (ⅱ) that visual stimuli are represented more coarsely in the RH. According to this account, false emotional memories are preferentially produced in the RH because emotional stimuli are both more strongly and more diffusely activated during encoding, leaving a memory trace that can be erroneously reactivated by similar but unstudied emotional items at test. If this right-hemisphere hypothesis is correct, then RH damage should result in a reduction in false memories to emotional stimuli relative to left-hemisphere lesions. To investigate this possibility, groups of right-brain-damaged (RBD, N= 15), left-brain-damaged (LBD, N= 15) and healthy (HC, N = 30) participants took part in a recognition memory experiment with emotional (negative and positive) and non-emotional pictures. False memories were operationalized as incorrect responses to unstudied pictures that were similar to studied ones. Both RBD and LBD participants showed similar reductions in false memories for negative pictures relative to controls. For positive pictures, however, false memories were reduced only in RBD patients. The results provide only partial support for the right-hemisphere hypothesis and suggest that inter-hemispheric cooperation models may be necessary to fully account for false emotional memories.
机译：先前的研究已将右半球（RH）归因于引起视觉记忆刺激的虚假记忆。这些结果已通过两个右半球特性进行了解释：（ⅰ）在RH中优先处理情绪刺激，（ⅱ）在RH中更粗略地表示视觉刺激。据此，由于在编码过程中情感刺激被更强烈和更广泛地激活，所以在RH中优先产生虚假的情感记忆，而在测试中，可能会被类似但未经研究的情感项错误地重新激活记忆轨迹。如果这个右半球假说是正确的，那么相对于左半球病变，RH损害应该导致对情绪刺激的错误记忆减少。为了研究这种可能性，右脑损伤（RBD，N = 15），左脑损伤（LBD，N = 15）和健康受试者（HC，N = 30）的组参加了识别记忆实验，情感（消极和积极的）和非情感的图片。错误的记忆被操作为对未研究图片的错误反应，类似于研究图片。相对于对照，RBD和LBD参与者都显示出负图的错误记忆的相似减少。但是，对于阳性图片，只有RBD患者减少了错误的记忆。结果仅提供了对右半球假说的部分支持，并表明半球之间的合作模型对于充分解释错误的情感记忆可能是必要的。

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