Optimal integration of texture and motion cues to depth. Slant from texture and disparity cues: optimal cue combination. Humans integrate visual and haptic information in a statistically optimal fashion. The ventriloquist effect results from near-optimal bimodal integration. These results provide direct evidence for a neural mechanism mediating a simple and widespread form of statistical inference.Īlais, D. We found that the mathematical combination of visual and vestibular inputs by single neurons is generally consistent with recent theories of optimal probabilistic computation in neural circuits. The monkeys appropriately placed greater weight on the more reliable cue, and population decoding of neural responses in the dorsal medial superior temporal area closely predicted behavioral cue weighting, including modest deviations from optimality. ![]() We trained monkeys to perform a heading discrimination task from visual and vestibular cues, varying cue reliability randomly. ![]() Human observers typically employ the optimal strategy of weighting each cue in proportion to its reliability, but the neural basis of this computation remains poorly understood. Integration of multiple sensory cues is essential for precise and accurate perception and behavioral performance, yet the reliability of sensory signals can vary across modalities and viewing conditions.
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