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Topography of acoustic response characteristics in the midbrain inferior colliculus of Kunming mouse

机译:昆明小鼠中脑下丘的声学响应特征的地形

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Topography of acoustic response characteristics of the midbrain inferior colliculus (IC) of the Kunming mouse was studied by using extracellular recording techniques. The characteristic frequency (CF) range represented in the different divisions of the IC differed markedly: 4—15 kHz in the dorsal cortex (DC), 10—70 kHz in the central nucleus (CN), and 4—35 kHz in the external cortex (EC). The CF in the CN increased from dorsal and lateral to ventral and medial, higher CFs represented at its ventromedial part and lower CFs at its dorsal part. The isofrequency contours of CFs were incurvate. Minimum thresholds (MT) of the auditory neurons in DC and the central part of CN were lower (about 10 dB SPL), but considerably higher in the dorsal and ventral region of EC. Results suggest that each of the divisions in the mouse IC may have different auditory functions.
机译:使用细胞外记录技术研究了昆明小鼠中脑下丘脑(IC)的声学响应特征的地形。 IC的不同部分所代表的特征频率(CF)范围显着不同:背皮质(DC)为4-15 kHz,中核(CN)为10-70 kHz,外部为4-35 kHz皮质(EC)。 CN中的CF从背侧和外侧增加到腹侧和内侧,在其前腹部分代表较高的CF,在背侧部分代表较低的CF。 CF的等频率线是弯曲的。 DC和CN中央部分的听觉神经元的最低阈值(MT)较低(约10 dB SPL),但在EC的背侧和腹侧区域中较高。结果表明,鼠标IC中的每个部分可能具有不同的听觉功能。

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