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Recent observations have implicated the vomeronasal (accessory olfactory) system in the chemosensory control of rodent social behaviors. The purpose of this study was to observe the effects of peripheral vomeronasal organ extirpation on sexual behavior, aggression, and urine marking in male mice. Relative to sham-operated control animals, mice lacking(More)
The volume of the sexually dimorphic nucleus in the preoptic area (SDN-POA) of the rat brain is several fold larger in males than in females. When female rats were treated pre- and postnatally with testosterone propionate (TP) or with diethylstilbestrol (DES) they became anovulatory and their SDN-POA developed equivalent in size to that of normal males.(More)
Sexually dimorphic regions are described in two areas of the guinea pig brain: the medial preoptic area (MPOA) and the bed nucleus of the stria terminalis (BNST). The volume of a darkly staining portion of the MPOA is approximately 4-fold larger in male than in female guinea pigs, and the volume of a darkly staining portion of the BNST is approximately 36%(More)
We present a novel scheme for all-optical label swapping that relies on logic exclusive-OR (XOR) in an integrated SOA-based Michelson interferometer. The scheme allows simple, efficient and mechanically stable operation, while relaxing the requirements on packet format and simplifying switch management. Furthermore, the label-swapping scheme does not(More)
This study documents, for the first time, the temporal pattern of luteinizing hormone (LH) release and the relationship between plasma LH concentrations and testicular androgenic responses in young and aged male mice. Both LH and testosterone were measured in the same samples of blood plasma withdrawn at frequent intervals over 9 h from awake, mobile mice(More)
The volume of a sexually dimorphic nucleus in the preoptic area (SDN-POA) of the rat brain is several fold larger in males than in females. When female rats were treated pre- and postnatally with testosterone propionate (TP) their SDN-POA developed equivalent in size to that of normal males. The results indicate that the gross morphological sex difference(More)
In contrast to other male mice, many hybrid B6D2F1 males continue to mate after being castrated in adulthood. This persistent sexual behavior in the castrated hybrids presumably is based upon heterozygosity that might occur within individual loci or between different loci. Those possibilities were discriminated by studying BXD recombinant inbred mice. In(More)
Evidence has accumulated demonstrating that the vomeronasal (accessory olfactory) system mediates intraspecific chemosensory communication in several mammals. For example, the neuroendocrine effects of priming pheromones in females and the behavioral responses to signaling pheromones in males are disrupted in mice with damage to the vomeronasal system. The(More)
The purpose of the present study was to identify chemically some potential inputs to lumbar motoneurons of the rat in the spinal nucleus of the bulbocavernosus, ventral motor pool, dorsolateral nucleus, and retrodorsolateral nucleus. Substance P-like immunoreactivity and serotonin-like immunoreactivity were found in all four motor nuclei, with dense(More)