Perineuronal nets and subtypes of GABAergic cells differentiate auditory and multisensory nuclei in the intercollicular area of the midbrain
| Autor: | William A Noftz, Nichole L. Beebe, Brett R. Schofield |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Inferior colliculus Tegmentum Mesencephali Guinea Pigs Fluorescent Antibody Technique Biology Somatosensory system Article Midbrain 03 medical and health sciences 0302 clinical medicine Mesencephalon Neural Pathways Tegmentum Superior Colliculi medicine Animals GABAergic Neurons Afferent Pathways Glutamate Decarboxylase General Neuroscience Perineuronal net Oligodendroglia 030104 developmental biology medicine.anatomical_structure GABAergic Nucleus Neuroscience 030217 neurology & neurosurgery |
| Zdroj: | J Comp Neurol |
| ISSN: | 1096-9861 0021-9967 |
| Popis: | The intercollicular region, which lies between the inferior and superior colliculi in the midbrain, contains neurons that respond to auditory, visual, and somatosensory stimuli. Golgi studies have been used to parse this region into three distinct nuclei: the intercollicular tegmentum (ICt), the rostral pole of the inferior colliculus (ICrp), and the nucleus of the brachium of the IC (NBIC). Few reports have focused on these nuclei, especially the ICt and the ICrp, possibly due to lack of a marker that distinguishes these areas and is compatible with modern methods. Here, we found that staining for GABAergic cells and perineuronal nets differentiates these intercollicular nuclei in guinea pigs. Further, we found that the proportions of four subtypes of GABAergic cells differentiate intercollicular nuclei from each other and from adjacent inferior collicular subdivisions. Our results support earlier studies that suggest distinct morphology and functions for intercollicular nuclei, and provide staining methods that differentiate intercollicular nuclei and are compatible with most modern techniques. We hope that this will help future studies to further characterize the intercollicular region. |
| Databáze: | OpenAIRE |
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