Ratcliffe L, Weisman R
Department of Biology Queen's University, Kingston, Ontario, Canada K7L 3N6.
Department of Psychology, Queen's University, Kingston, Ontario, Canada K7L 3N6.
Behav Processes. 1988 Sep;17(3):199-203. doi: 10.1016/0376-6357(88)90003-4.
Captive black-capped chickadees (Parus atricapillus) were presented with normal (2-note) and lengthened (3-note) songs to investigate how note number and order are represented. Normal fee bee (FB) song was embedded in four different 3-note sequences containing an additional fee (F) or bee (B). Latency to vocalize after playback varied with the position, but not the type of added note, (i.e. slower responses to BFB and FFB than to FBF and FBB). Latency did not differ appreciably between normal (2-note) and these 3-note songs. The presence of normal 2-note song in each 3-note song may override note count. Our results provide further evidence that chickadees represent the absolute temporal location of the first, but not the last note of conspecific song.
研究人员向圈养的黑头山雀（Parus atricapillus）播放正常（两音符）和加长（三音符）的歌声，以探究音符数量和顺序是如何被表征的。正常的fee bee（FB）歌声被嵌入到四个不同的三音符序列中，这些序列包含一个额外的fee（F）或bee（B）。播放后发声的潜伏期随位置而变化，但不随添加音符的类型而变化（即对BFB和FFB的反应比对FBF和FBB的反应慢）。正常（两音符）歌声和这些三音符歌声之间的潜伏期没有明显差异。每首三音符歌声中正常两音符歌声的存在可能会覆盖音符计数。我们的结果提供了进一步的证据，表明山雀能够表征同种歌声中第一个音符的绝对时间位置，但不能表征最后一个音符的绝对时间位置。
