Van Hulle Lore, Van Damme Stefaan, Crombez Geert
Department of Experimental-Clinical and Health Psychology, Ghent University, Henri Dunantlaan 2, 9000 Ghent, Belgium.
Perception. 2013;42(2):223-32. doi: 10.1068/p7340.
We investigated the effects of focusing attention towards auditory or somatosensory stimuli on perceptual sensitivity and response bias using a signal detection task. Participants (N = 44) performed an unspeeded detection task in which weak (individually calibrated) somatosensory or auditory stimuli were delivered. The focus of attention was manipulated by the presentation of a visual cue at the start of each trial. The visual cue consisted of the word "warmth" or the word "tone". This word cue was predictive of the corresponding target on two-thirds of the trials. As hypothesised, the results showed that cueing attention to a specific sensory modality resulted in a higher perceptual sensitivity for validly cued targets than for invalidly cued targets, as well as in a more liberal response criterion for reporting stimuli in the valid modality than in the invalid modality. The value of this experimental paradigm for investigating excessive attentional focus or hypervigilance in various non-clinical and clinical populations is discussed.
我们使用信号检测任务，研究了将注意力集中于听觉或体感刺激对感知灵敏度和反应偏差的影响。参与者（N = 44）执行了一项无时间限制的检测任务，在此任务中会传递微弱的（单独校准的）体感或听觉刺激。在每次试验开始时，通过呈现视觉提示来操纵注意力焦点。视觉提示由“温暖”一词或“音调”一词组成。在三分之二的试验中，这个词提示可预测相应的目标。正如所假设的那样，结果表明，将注意力提示到特定感觉模态会导致对有效提示目标的感知灵敏度高于无效提示目标，并且在报告有效模态中的刺激时，反应标准比无效模态更为宽松。本文讨论了这种实验范式在研究各种非临床和临床人群中过度注意力集中或过度警觉方面的价值。
