Distinct neuron populations for simple and compound calls in the primary auditory cortex of awake marmosets.

Marmosets are highly social non-human primates that live in families. They exhibit rich vocalization, but the neural basis underlying this complex vocal communication is largely unknown. Here we report the existence of specific neuron populations in marmoset A1 that respond selectively to distinct simple or compound calls made by conspecific marmosets.

Local homogeneity of tonotopic organization in the primary auditory cortex of marmosets.

Marmoset has emerged as a useful nonhuman primate species for studying brain structure and function. Previous studies on the mouse primary auditory cortex (A1) showed that neurons with preferential frequency-tuning responses are mixed within local cortical regions, despite a large-scale tonotopic organization. Here we found that frequency-tuning properties of marmoset A1 neurons are highly uniform within local cortical regions.

Cerebellar interpositus nuclear inputs impinge on paraventricular neurons of the hypothalamus in rats.

Several reports have indicated that the cerebellum is involved in regulation of some non-somatic activities through the cerebellohypothalamic projections. Therefore, the modulatory effects of the cerebellar interpositus nucleus (IN) on neuronal activity of the paraventricular nucleus of the hypothalamus (PVN) was investigated in this study by using in vivo extracellular recording technique in rats. We recorded from 115 PVN neurons, 51 (44.

Convergence of gastric vagal and cerebellar fastigial nuclear inputs on glycemia-sensitive neurons of lateral hypothalamic area in the rat.

Gastric vagal and cerebellar fastigial nuclear afferents have been implicated in the regulation of food intake by their communication with lateral hypothalamic area (LHA), which is generally referred to be the feeding center. This study was designed to examine the possible convergence of the inputs from the gastric vagal trunks and cerebellar fastigial nucleus (FN) on the LHA neurons. Among recorded 191 LHA neurons, 99 (51.