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首页> 外文期刊>The Journal of Experimental Biology >Effect of anomalous pulse timing on call discrimination by females of the gray treefrog (Hyla versicolor): behavioral correlates of neurobiology
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Effect of anomalous pulse timing on call discrimination by females of the gray treefrog (Hyla versicolor): behavioral correlates of neurobiology

机译：脉冲正时异常对灰树蛙（Hyla versicolor）雌性呼叫识别的影响：神经生物学行为相关

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摘要

Research has demonstrated that certain midbrain neurons of anurans 'count' interpulse intervals (IPIs). Some neurons fire after exposure to fewer intervals than do others. Counting can be reset to zero if an IPI falls outside the cell's tolerance range. We tested female gray treefrogs for behavioral correlates of these neural response patterns using phonotaxis tests in order to gain a better understanding of the mechanistic bases of female responses to calls. For example, previous work demonstrated females often prefer longer to shorter pulsed advertisement calls, even when the former occur at lower rates. Call attractiveness can also be reduced when pulse duration and timing have been manipulated experimentally or disrupted by acoustic interference. In this study, female responses were consistent with neural data, emphasizing the importance of IPIs. Females discriminated in favor of calls with normal interpulse timing relative to those in which a single IPI was too long or too short. Our data suggest that neural resetting of interval counting by inappropriate intervals may more strongly influence females than reduced firing in response to such intervals on an individual basis. Data also suggest a transition point between 125 ms and 175 ms at which an interval between pulse strings is treated as an interval between calls.
机译：研究表明，某些无脑的中脑神经元会“计数”脉搏间隔（IPI）。某些神经元暴露于较少的时间间隔后会激发，而不是其他神经元。如果IPI超出单元的容差范围，则可以将计数重置为零。我们使用音位轴测试对雌性灰色树蛙进行了这些神经反应模式的行为相关性测试，以更好地了解雌性对电话反应的机制基础。例如，以前的工作表明，女性通常更喜欢较长的广告，而不是较短的脉冲广告，即使前者的广告发生率较低。当脉冲持续时间和时序已通过实验进行操作或被声学干扰破坏时，通话吸引力也会降低。在这项研究中，女性的反应与神经数据一致，强调了IPI的重要性。与单个IPI太长或太短的呼叫相比，女性偏爱具有正常脉冲定时的呼叫。我们的数据表明，以不适当的间隔进行间隔计数的神经复位可能比减少对个体间隔的射击次数减少的影响更大。数据还建议在125毫秒和175毫秒之间的过渡点，在该过渡点处，脉冲串之间的间隔被视为通话之间的间隔。

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