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Breathing a mixture of 10% CO(2) with 90% O(2) (referred to here as carbogen-10) increases blood flow due to the vasodilatory effect of CO(2), and raises blood O(2) saturation due to the enriched oxygen level. These effects both tend to reduce the level of deoxygenated hemoglobin in brain tissues, thereby reducing the potential for further increases in BOLD(More)
The brain monoamine systems play a crucial role in mediating social behaviors. In order to assess the effect of socially isolated rats on neurochemical substrates in hypothalamus we measured levels of tyrosine hydroxylase (TH), noradrenaline transporter (NET) and vesicular monoamine transporter 2 (VMAT 2). Our results show that 12 weeks of social isolation(More)
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