Seitz K S, McKeever W F
Brain Cogn. 1984 Oct;3(4):413-25. doi: 10.1016/0278-2626(84)90031-9.
The use of bilateral presentation in lateralized tachistoscopic reaction time (RT) tasks has been precluded by problems of how to instruct the subject to respond to the left visual field (LVF) or right visual field (RVF) stimulus and by the necessity of fixation control with bilateral presentation. J. Schmuller and R. Goodman (1979, Brain and Language, 8, 81-91; 1980, Brain and Language, 11, 12-18) offered a method, applied to date only in recognition accuracy studies, which can overcome these problems. They used an "arrowhead pointer" at fixation. This instructs the subject as to which stimulus to report first and also controls fixation. We adapted the method to the RT paradigm by having subjects report only the stimulus indicated and applied it in a bilateral presentation version of the Object Naming Latency Task (W. F. McKeever & T. L. Jackson, 1979, Brain and Language, 7, 175-190). Fifty subjects received the unilateral task and 50 received the bilateral task. The bilateral task yielded right visual field superiority in 98% of the subjects and the magnitude of the superiority was over three times as large as in the unilateral task. Different sex x familial sinistrality x VHF interactions obtained on the tasks. Combining the advantages of reaction time and bilateral presentation methods may substantially increase the resolving power of lateralized tachistoscopic tasks.
在侧化速示反应时（RT）任务中使用双侧呈现受到了两个问题的限制：一是如何指导受试者对左视野（LVF）或右视野（RVF）刺激做出反应，二是双侧呈现时对注视控制的必要性。J.施穆勒和R.古德曼（1979年，《大脑与语言》，第8卷，第81 - 91页；1980年，《大脑与语言》，第11卷，第12 - 18页）提出了一种方法，迄今为止仅应用于识别准确性研究，该方法可以克服这些问题。他们在注视点处使用了一个“箭头指针”。这既告知受试者首先报告哪个刺激，又控制了注视。我们通过让受试者只报告所指示的刺激，将该方法应用于RT范式，并将其应用于物体命名潜伏期任务的双侧呈现版本（W.F.麦基弗和T.L.杰克逊，1979年，《大脑与语言》，第7卷，第175 - 190页）。50名受试者接受了单侧任务，50名受试者接受了双侧任务。在98%的受试者中，双侧任务产生了右视野优势，且优势程度是单侧任务的三倍多。在这些任务中获得了不同的性别×家族性左利手×视野半侧化交互作用。结合反应时和双侧呈现方法的优点可能会大幅提高侧化速示任务的分辨能力。
