PDF(Pubmed)
Abstract：
Researchers dispute the cause of errors in high Go, low No Go target detection tasks, like the Sustained Attention to Response Task (SART). Some researchers propose errors in the SART are due to perceptual decoupling, where a participant is unaware of stimulus identity. This lack of external awareness causes an erroneous response. Other researchers suggest the majority of the errors in the SART are instead due to response leniency, not perceptual decoupling. Response delays may enable a participant who is initially unaware of stimulus identity, perceptually decoupled, to become aware of stimulus identity, or perceptually recoupled. If, however, the stimulus presentation time is shortened to the minimum necessary for stimulus recognition and the stimulus is disrupted with a structured mask, then there should be no time to enable perception to recouple even with a response delay. From the perceptual decoupling perspective, there should be no impact of a response delay on performance in this case. Alternatively if response bias is critical, then even in this case a response delay may impact performance. In this study, we shortened stimulus presentation time and added a structured mask. We examined whether a response delay impacted performance in the SART and tasks where the SART\'s response format was reversed. We expected a response delay would only impact signal detection theory bias, c, in the SART, where response leniency is an issue. In the reverse formatted SART, since bias was not expected to be lenient, we expected no impact or minimal impact of a response delay on response bias. These predictions were verified. Response bias is more critical in understanding SART performance, than perceptual decoupling, which is rare if it occurs at all in the SART.
摘要：
研究人员对高配错误的原因提出异议，低NoGo目标检测任务，比如持续关注响应任务(SART)。一些研究人员认为SART中的错误是由于感知解耦，参与者不知道刺激身份。这种缺乏外部意识会导致错误的反应。其他研究人员认为，SART中的大多数错误是由于反应宽大处理，不是感知脱钩。响应延迟可能会使最初不知道刺激身份的参与者，感知解耦，意识到刺激的身份，或在感知上重新耦合。如果,然而,将刺激呈现时间缩短到刺激识别所需的最小值，并且用结构化的掩模破坏刺激，那么即使有反应延迟，也应该没有时间使感知重新耦合。从感知脱钩的角度来看，在这种情况下，响应延迟对性能没有影响。或者，如果响应偏差是关键的，即使在这种情况下，响应延迟也可能影响性能。在这项研究中,我们缩短了刺激呈现时间，并增加了一个结构化的面具。我们检查了响应延迟是否影响SART和SART响应格式反转的任务的性能。我们预计响应延迟只会影响信号检测理论偏差，C,在SART中，回应宽大处理是一个问题。在反向格式化的SART中，由于偏见预计不会宽大处理，我们预计反应延迟对反应偏差没有影响或影响最小.这些预测得到了验证。响应偏差在理解SART性能方面更为重要，而不是感知解耦，如果它发生在SART中，这是罕见的。
