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PRIMARY CORTICAL REPRESENTATION OF SOUNDS BY THE COORDINATION OF ACTION-POTENTIAL TIMING

机译：通过动作电位时序的协调来进行声音的初级皮质表示

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CORTICAL population coding could in principle rely on either the mean rate of neuronal action potentials, or the relative timing of action potentials, or both, When a single sensory stimulus drives many neurons to fire at elevated rates, the spikes of these neurons become tightly synchronized(1,2), which could be involved in 'binding' together individual firing-rate feature representations into a unified object percept(3), Here we demonstrate that the relative timing of cortical action potentials can signal stimulus features themselves, a function even more basic than feature grouping, Populations of neurons in the primary auditory cortex can coordinate the relative timing of their action potentials such that spikes occur closer together in time during continuous stimuli. In this way cortical neurons can signal stimuli even when their firing rates do not change, Population coding based on relative spike timing can systematically signal stimulus features, it is topographically mapped, and it follows the stimulus time course even where mean firing rate does not. [References: 30]
机译：CORTICAL种群编码原则上可以依赖于神经元动作电位的平均速率或动作电位的相对时间，或同时依赖于两者，当单个感觉刺激驱动许多神经元以较高的速率发射时，这些神经元的尖峰将紧密同步（1,2），这可能涉及将单个放电速率特征表示“绑定”在一起成为一个统一的物体知觉（3），这里我们证明了皮质动作电位的相对时机可以发出刺激特征本身的信号，甚至是一种功能比特征分组更基本的是，初级听觉皮层中的神经元种群可以协调其动作电位的相对时序，从而使尖峰在连续刺激过程中在时间上更靠近在一起。通过这种方式，即使皮层神经元的放电速率不变，它也可以发出信号。基于相对尖峰定时的种群编码可以系统地发出刺激信号，经过地形映射，即使平均放电速率没有变化，它也遵循刺激时间过程。 [参考：30]

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