École d'Orthophonie et d'Audiologie, Université de Montréal.
J Exp Psychol Hum Percept Perform. 2013 Dec;39(6):1503-7. doi: 10.1037/a0034015. Epub 2013 Aug 19.
Neuroimaging studies have shown that the perception of auditory stimuli involves occipital cortical regions traditionally associated with visual processing, even in the absence of any overt visual component to the task. Analogous behavioral evidence of an interaction between visual and auditory processing during purely auditory tasks comes from studies of short-term visual deprivation on the perception of auditory cues, however, the results of such studies remain equivocal. Although some data have suggested that visual deprivation significantly increases loudness and pitch discrimination and reduces spatial localization inaccuracies, it is still unclear whether such improvement extends to the perception of spectrally complex cues, such as those involved in speech and music perception. We present data demonstrating that a 90-min period of visual deprivation causes a transient improvement in the perception of harmonicity: a spectrally complex cue that plays a key role in music and speech perception. The results provide clear behavioral evidence supporting a role for the visual system in the processing of complex auditory stimuli, even in the absence of any visual component to the task.
神经影像学研究表明，即使任务中没有明显的视觉成分，听觉刺激的感知也涉及到与视觉处理相关的枕叶皮质区域。在纯粹的听觉任务中，视觉和听觉处理之间相互作用的类似行为证据来自于短期视觉剥夺对听觉线索感知的研究，然而，这些研究的结果仍然存在争议。尽管一些数据表明，视觉剥夺显著提高了响度和音高辨别力，并降低了空间定位的不准确性，但尚不清楚这种改善是否扩展到对频谱复杂线索的感知，例如涉及言语和音乐感知的线索。我们提出的数据表明，90 分钟的视觉剥夺会导致对谐和性感知的短暂改善：这是一种在音乐和言语感知中起关键作用的频谱复杂线索。这些结果提供了明确的行为证据，支持视觉系统在处理复杂听觉刺激中的作用，即使任务中没有任何视觉成分。
