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In mapping, tungsten microelectrodes were used to record multi\u2010unit discharges in the thalamus in response to mechanical stimulation of oral surfaces. The pattern of projections seen in sheep is not a general mammalian pattern; there is extensive variability among mammals in the laterality and internal organization of the projections from the mouth. In spite of the great variability, the results suggest an hypothesis concerning phylogenetic trends: descendants of palaeoryctoid insectivores (cats, raccoons, and sheep in our sample) have extensive ipsilateral projections from the mouth, in other therian mammals (opossums, agoutis, and squirrel monkeys in our sample) the ipsilateral component is small or absent.<\/jats:p>","DOI":"10.1002\/cne.901630104","type":"journal-article","created":{"date-parts":[[2005,1,1]],"date-time":"2005-01-01T16:08:45Z","timestamp":1104595725000},"page":"41-63","source":"Crossref","is-referenced-by-count":37,"title":["Species differences in mechanosensory projections from the mouth to the ventrobasal thalamus"],"prefix":"10.1002","volume":"163","author":[{"suffix":"Jr.","given":"Rocco A.","family":"Bombardieri","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"suffix":"Jr.","given":"John Irwin","family":"Johnson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gilberto B.","family":"Campos","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2004,10,9]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1093\/brain\/66.2.89"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.148.3676.1462"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.901180106"},{"key":"e_1_2_1_5_1","first-page":"148","volume-title":"Handbook of Sensory Physiology. 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