Selective attention to multidimensional auditory stimuli.
Selective attention to multidimensional auditory stimuli.
复制标题
DOI：
10.1037//0096-1523.9.1.1
复制
发表时间：
1983-02
期刊：
影响因子：
--
通讯作者：
J. C. Hansen;S. Hillyard
中科院分区：
文献类型：
--
作者：
J. C. Hansen;S. Hillyard
在选择性注意任务中，从头皮记录多维听觉刺激引起的事件相关脑电位（ERP）。受试者聆听在音调、位置和持续时间各两个级别之间正交变化的音调，并对具有特定音调和位置值的较长持续时间的目标刺激做出反应。不同组之间音高和位置属性的可辨别性有所不同。通过检查与指定目标共享音调和/或位置线索的 ERP，我们推断出这些属性处理之间的相互关系。在所有组中，未能以易于辨别的线索匹配目标音调的刺激仅引发选择性处理的短暂 ERP 迹象。与目标共享“简单”提示但不共享“困难”提示的音调会引发 ERP，这表明需要进行更广泛的处理，但不如共享两个提示的刺激那么广泛。此外，对指定目标的反应时间和 ERP 延迟不受俯仰和位置辨别力变化的影响。这种结果模式与并行、自终止模型和整体处理模型一致，并且与指定这些维度的串行或详尽并行处理的模型相矛盾。并行、自我终止模型和整体模型都为分层刺激选择提供了通用机制，从而实现了处理经济性，这是选择性注意的经典多阶段理论的基本目标。
Event-related brain potentials (ERPs) elicited by multidimensional auditory stimuli were recorded from the scalp in a selective-attention task. Subjects listened to tone pips varying orthogonally between two levels each of pitch, location, and duration and responded to longer duration target stimuli having specific values of pitch and location. The discriminability of the pitch and location attributes was varied between groups. By examining the ERPs to tones that shared pitch and/or locational cues with the designated target, we inferred interrelationships among the processing of these attributes. In all groups, stimuli that failed to match the target tone in an easily discriminable cue elicited only transitory ERP signs of selective processing. Tones sharing the "easy" but not the "hard" cue with the target elicited ERPs that indicated more extensive processing, but not as extensive as stimuli sharing both cues. In addition, reaction times and ERP latencies to the designated targets were not influenced by variations in the discriminability of pitch and location. This pattern of results is consistent with parallel, self-terminating models and holistic models of processing and contradicts models specifying either serial or exhaustive parallel processing of these dimensions. Both the parallel, self-terminating models and the holistic models provide a generalized mechanism for hierarchical stimulus selections that achieve an economy of processing, an underlying goal of classic, multiple-stage theories of selective attention.