41. Additionally each subfield requires quite different skills. 42. A subfield of connectomics deals with the comparison of the brain graphs of multiple subjects. 43. In mathematics, geometrical transversal theory is a subfield of intersections of classes of sets. 44. This subfield is important because sound is a vital facilitator of ideas and spreading culture. 45. Local motion detectors that have the same direction preference are combined into the same subfield . 46. The remaining elements of generate in the sense that no other subfield contains any of them. 47. The term is commonly used in phylogenetics ( a subfield of biology ) and in linguistics. 48. The field of "'articulatory phonetics "'is a subfield of phonetics. 49. Ethnopoetics is considered a subfield of ethnology, anthropology, folkloristics, literature and translation studies. 50. Comparative media system research is an encouraging and important subfield of mediated cross-border communication.