Sayag N, Hoffman N W, Yahr P
Department of Psychobiology, University of California, Irvine 92717-4550.
Behav Neurosci. 1994 Aug;108(4):743-57. doi: 10.1037//0735-7044.108.4.743.
The sexually dimorphic area (SDA) of the gerbil hypothalamus is essential for mating in male gerbils. To determine if it affects mating through its connections with the ventral part of the lateral septal nucleus (LSv), the caudal part of the medial bed nucleus of the stria terminalis (caudal BSTm), or the medial amygdala-amygdalohippocampal area (MA-AHi), these connections were severed. Unilateral cell-body lesions were made in the SDA and in the contralateral LSv, caudal BSTm, or MA-AHi. Controls received the same lesions ipsilaterally. Other gerbils received lesions in the caudal BSTm and contra- or ipsilateral MA-AHi. Only contralateral lesions of the SDA and caudal BSTm severely impaired mating. Because contralateral lesions of the SDA and MA-AHi, or BSTm and MA-AHi, did not mimic this effect, the BSTm neurons that are needed for male sexual behavior through their connections with the SDA do not simply relay information to or from the MA-AHi.
沙鼠下丘脑的性二态区（SDA）对雄性沙鼠的交配行为至关重要。为了确定它是否通过与外侧隔核腹侧部分（LSv）、终纹床核尾部（尾侧BSTm）或内侧杏仁核-杏仁海马区（MA-AHi）的连接来影响交配，切断了这些连接。在SDA以及对侧的LSv、尾侧BSTm或MA-AHi进行单侧细胞体损伤。对照组在同侧接受相同的损伤。其他沙鼠在尾侧BSTm以及对侧或同侧的MA-AHi接受损伤。只有SDA和尾侧BSTm的对侧损伤严重损害了交配行为。由于SDA和MA-AHi或BSTm和MA-AHi的对侧损伤并未模拟出这种效应，因此通过与SDA的连接对雄性性行为所必需的BSTm神经元并非简单地向MA-AHi传递信息或从MA-AHi接收信息。
