The role of spatial frequency selection in local versus global perception

摘要: The aim of this research is to investigate the extent which selective attention spatial frequency (SF) mediates local versus global perception in general and context face perception. Previous has suggested a relationship between processing high low SFs perception, respectively, but nature debated. experiments reported here demonstrate that aspects hierarchical display biases flexible selection relatively higher lower during image processing. Moreover, attentional relative SF perceptual integration identity elements with level (local/global) at they occur. Finally, shown modulate early stages reflected N170-effect, neurobiological index categorization particularly sensitive features. N170-effect found be equally robust response both HSFs LSFs face-related stimuli, reliance on one scale or another contingent upon attended stimulus, whether its configuration intact. Taken together, investigation provides clear evidence flexible, top-down low-level channels visual displays, for tightly controlled experimental stimuli as well faces, natural frequently viewed object category.