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首页> 外文期刊>Neuron >Timing, timing, timing: fast decoding of object information from intracranial field potentials in human visual cortex.
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Timing, timing, timing: fast decoding of object information from intracranial field potentials in human visual cortex.

机译：定时，定时，定时：从人类视觉皮层中的颅内场电位快速解码对象信息。

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摘要

The difficulty of visual recognition stems from the need to achieve high selectivity while maintaining robustness to object transformations within hundreds of milliseconds. Theories of visual recognition differ in whether the neuronal circuits invoke recurrent feedback connections or not. The timing of neurophysiological responses in visual cortex plays a key role in distinguishing between bottom-up and top-down theories. Here, we quantified at millisecond resolution the amount of visual information conveyed by intracranial field potentials from 912 electrodes in 11 human subjects. We could decode object category information from human visual cortex in single trials as early as 100 ms poststimulus. Decoding performance was robust to depth rotation and scale changes. The results suggest that physiological activity in the temporal lobe can account for key properties of visual recognition. The fast decoding in single trials is compatible with feedforward theories and provides strong constraints for computational models of human vision.
机译：视觉识别的困难源于实现高选择性同时又要在数百毫秒内保持对对象转换的鲁棒性的需求。视觉识别的理论在神经回路是否调用循环反馈连接方面有所不同。视觉皮层中神经生理反应的时机在区分自下而上和自上而下的理论中起着关键作用。在这里，我们以毫秒级的分辨率量化了来自11个人类受试者的912个电极的颅内场电位所传达的视觉信息量。我们可以在单次刺激后100毫秒内从人类视觉皮层解码对象类别信息。解码性能对于深度旋转和缩放比例具有鲁棒性。结果表明颞叶的生理活动可以解释视觉识别的关键特性。单次试验中的快速解码与前馈理论兼容，并为人类视觉的计算模型提供了强大的约束条件。

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