Interaction of bottom-up and top-down processes in the perception of ambiguous figures

Interaction of bottom-up and top-down processes in the perception of ambiguous figures

Ambiguous figures reverse their appearance during prolonged viewing and can be perceived in two (or more) available interpretations. Both physical stimulus manipulations and cognitive control influence the perception of ambiguous figures, but the underlying mechanisms remain poorly understood. In the current study, the perception of an ambiguous figure was manipulated by adaptation to unambiguo...

Event-Related Potentials of Bottom-Up and Top-Down Processing of Emotional Faces

Introduction: Emotional stimulus is processed automatically in a bottom-up way or can be processed voluntarily in a top-down way. Imaging studies have indicated that bottom-up and top-down processing are mediated through different neural systems. However, temporal differentiation of top-down versus bottom-up processing of facial emotional expressions has remained to be clarified. The present st...

Individual Differences in Top-down and Bottom-up Prominence Perception

The perception of prosody, like other aspects of speech perception, relies on a combination of bottom-up and top-down information. In the context of prominence perception, the present study explored the interaction of these two types of cues, and individual variation in their effects on listeners. In a “naïve prosody transcription” task, 120 listeners gave prominence ratings to verbs and object...

Bottom-up, top-down

Top-down and bottom-up processes in speech comprehension.

Speech comprehension includes both bottom-up and top-down processes, and imaging studies have isolated a frontal-temporal network of brain areas active during speech perception. However, the precise role of the various areas in this network during normal speech comprehension is not yet fully understood. In the present fMRI study, the signal-to-noise ratio (SNR) of spoken sentences was varied in...