دورية أكاديمية
Thalamic connections of the dorsal and ventral premotor areas in New World owl monkeys.
| العنوان: | Thalamic connections of the dorsal and ventral premotor areas in New World owl monkeys. |
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| المؤلفون: | Stepniewska I; Department of Psychology, Vanderbilt University, Nashville, TN 37203, USA. iwona.stepniewska@vanderbilt.edu, Preuss TM, Kaas JH |
| المصدر: | Neuroscience [Neuroscience] 2007 Jul 13; Vol. 147 (3), pp. 727-45. Date of Electronic Publication: 2007 Jun 13. |
| نوع المنشور: | Journal Article; Research Support, N.I.H., Extramural |
| اللغة: | English |
| بيانات الدورية: | Publisher: Elsevier Science Country of Publication: United States NLM ID: 7605074 Publication Model: Print-Electronic Cited Medium: Print ISSN: 0306-4522 (Print) Linking ISSN: 03064522 NLM ISO Abbreviation: Neuroscience Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: [New York?] : Elsevier Science Original Publication: Oxford, Elmsford, N. Y., Pergamon Press |
| مواضيع طبية MeSH: | Aotus trivirgatus/*anatomy & histology , Motor Cortex/*physiology , Thalamus/*physiology, Acetylcholinesterase/metabolism ; Afferent Pathways/physiology ; Animals ; Aotus trivirgatus/physiology ; Brain Mapping ; Electric Stimulation/methods ; Motor Cortex/cytology ; Neurons/physiology ; Thalamus/cytology ; Wheat Germ Agglutinin-Horseradish Peroxidase Conjugate |
| مستخلص: | Thalamic connections of two premotor cortex areas, dorsal (PMD) and ventral (PMV), were revealed in New World owl monkeys by injections of fluorescent dyes or wheat-germ agglutinin conjugated to horseradish peroxidase (WGA-HRP). The injections were placed in the forelimb and eye-movement representations of PMD and in the forelimb representation of PMV as determined by microstimulation mapping. For comparison, injections were also placed in the forelimb representation of primary motor cortex (M1) of two owl monkeys. The results indicate that both PMD and PMV receive dense projections from the ventral lateral (VL) and ventral anterior (VA) thalamus, and sparser projections from the ventromedial (VM), mediodorsal (MD) and intralaminar (IL) nuclei. Labeled neurons in VL were concentrated in the anterior (VLa) and the medial (VLx) nuclei, with only a few labeled cells in the dorsal (VLd) and posterior (VLp) nuclei. In VA, labeled neurons were concentrated in the parvocellular division (VApc) dorsomedial to VLa. Labeled neurons in MD were concentrated in the most lateral and posterior parts of the nucleus. VApc projected more densely to PMD than PMV, especially to rostral PMD, whereas caudal PMD received stronger projections from neurons in VLx and VLa. VLd projected exclusively to PMD, and not to PMV. In addition, neurons labeled by PMD injections tended to be more dorsal in VL, IL, and MD than those labeled by PMV injections. The results indicate that both premotor areas receive indirect inputs from the cerebellum (via VLx, VLd and IL) and globus pallidus (via VLa, VApc, and MD). Comparisons of thalamic projections to premotor and M1 indicate that both regions receive strong projections from VLx and VLa, with the populations of cells projecting to M1 located more laterally in these nuclei. VApc, VLd, and MD project mainly to premotor areas, while VLp projects mainly to M1. Overall, the thalamic connectivity patterns of premotor cortex in New World owl monkeys are similar to those reported for Old World monkeys. |
| معلومات مُعتمدة: | R01 EY002686 United States EY NEI NIH HHS; R01 NS016446 United States NS NINDS NIH HHS; NS 16446 United States NS NINDS NIH HHS |
| المشرفين على المادة: | 0 (Wheat Germ Agglutinin-Horseradish Peroxidase Conjugate) EC 3.1.1.7 (Acetylcholinesterase) |
| تواريخ الأحداث: | Date Created: 20070616 Date Completed: 20071019 Latest Revision: 20161019 |
| رمز التحديث: | 20231215 |
| DOI: | 10.1016/j.neuroscience.2007.03.054 |
| PMID: | 17570597 |
| قاعدة البيانات: | MEDLINE |
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Full Text Finder | تدمد: | 0306-4522 |
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| DOI: | 10.1016/j.neuroscience.2007.03.054 |