NEURAL MECHANISMS OF BINAURAL SIGNAL DETECTION

生物体检测到目标信号存在的能力 在双耳刺激条件下，噪声背景要大得多 在两耳之间存在强度时间上的差异 信号或噪音比在没有这种信号或噪音的情况下 不同。调节这种信号改善的大脑机制 可探测性是未知的，也是未经探索的。这个项目的目的是 记录大鼠听觉系统神经元的反应 钦奇拉，它的听力与人类相似，而它是 受产生信号变化的双耳声音的刺激 可探测性。获得的神经生理反应的类型将是 与刺激有关，与记录部位的神经解剖学有关，与 已经提出的解释这一现象的理论模型 提高了信号的可检测性。

The ability of the organism to detect the presence of a target signal in a background of noise is much greater under binaural stimulus conditions in which there is an interaural difference in time of intensity between either the signal or the noise than under conditions in which there is no such difference. The brain mechanisms mediating this improvement in signal detectability are unknown and unexplored. The purpose of this project is to record the responses of neurons of the auditory system of the chinchilla, which has hearing similar to that of the human, while it is stimulated by the binaural sounds which produce the changes in signal detectability. The types of neurophysiological responses obtained will be related to the stimuli, to the neuroanatomy of the recording sites and to the theoretical models which have been proposed to account for the improvement on signal detectability.