(IMAGE (TYPE "GIF") (PATH "gifs/Syllabus Chapters/SomatoMedlem/CKorder.309.081.gif")) (OUTLINE-COLOR (NAME "YELLOW")) (STRING-COLOR (NAME "RED")) (PIN-COLOR (NAME "RED")) (FRAME-INFO (STRING "Somatotopic Fiber Order. \(Image modified with permission from a drawing by C. Kaiser\). This frame shows three important tracts in the white matter of the spinal cord to illustrate the concept of somatotopic fiber order. The fibers in these tracts are arranged somatotopically such that information from \(or to\) the sacral \(S\), lumbar \(L\), thoracic \(T\) and cervical \(C\) regions is maintained in an orderly fashion. Note the order in the posterior column - gracile and cuneate fasciculi \(uncrossed tracts\) - and in the spinothalamic tract \(crossed tract\). Information related to the leg \(S, L\) is thus conveyed separately from that for the arm \(T, C\), and from that for the head \(which travels with the tracts above the level of the cervical cord\); the corticospinal tract is similarly ordered.")) (REGION (TYPE "STRUCT") (ACTION "lateral corticospinal tract") (ID 11) (CENTER-PT (91 145)) (COORD-LIST (115 173) (118 169) (120 165) (122 161) (123 157) (123 153) (122 149) (121 145) (121 141) (121 137) (119 133) (119 129) (117 125) (115 121) (111 117) (107 114) (103 112) (99 110) (95 109) (91 109) (87 109) (83 111) (79 113) (75 115) (71 118) (67 121) (65 126) (63 132) (62 137) (60 142) (59 147) (58 152) (59 157) (64 162) (67 167) (71 172) (76 175) (81 177) (86 181) (91 182) (96 183) (101 183) (106 180) (111 178) (115 173))) (REGION (TYPE "STRUCT") (ACTION "spinothalamic tract") (ID 10) (CENTER-PT (476 228)) (COORD-LIST (429 250) (431 246) (433 242) (437 238) (440 234) (445 231) (448 227) (452 223) (454 219) (458 214) (463 210) (468 207) (473 205) (478 204) (483 202) (488 199) (493 200) (498 202) (500 207) (502 213) (503 218) (501 223) (500 228) (499 233) (496 238) (493 243) (489 246) (486 251) (482 254) (478 258) (474 262) (470 265) (466 267) (462 270) (458 270) (454 271) (450 272) (444 273) (440 273) (436 271) (433 267) (429 264) (428 260) (428 256) (428 252) (429 250))) (REGION (TYPE "STRUCT") (ACTION "gracile fasciculus") (ID 9) (CENTER-PT (294 47)) (COORD-LIST (320 27) (319 32) (318 37) (318 42) (318 47) (317 52) (317 57) (317 62) (318 67) (318 72) (316 77) (315 82) (314 87) (314 92) (314 97) (314 103) (313 108) (312 114) (311 119) (309 124) (307 129) (306 134) (306 140) (306 146) (306 151) (306 156) (305 161) (306 166) (305 171) (304 176) (302 181) (300 186) (298 191) (296 196) (292 194) (288 191) (284 189) (280 187) (276 185) (272 182) (271 178) (271 174) (272 170) (272 166) (271 162) (271 158) (271 154) (271 150) (270 146) (270 142) (270 138) (269 134) (269 130) (269 126) (269 122) (270 118) (271 114) (272 110) (271 106) (271 102) (271 97) (272 93) (272 88) (272 84) (270 79) (270 75) (271 71) (271 67) (272 63) (272 59) (272 55) (270 51) (270 47) (270 43) (270 39) (270 35) (270 31) (271 27) (274 23) (278 19) (283 18) (289 18) (294 18) (299 19) (304 21) (310 21) (315 22) (320 27))) (REGION (TYPE "STRUCT") (ACTION "cuneate fasciculus") (ID 8) (CENTER-PT (351 76)) (COORD-LIST (306 146) (305 151) (304 156) (304 161) (305 166) (305 171) (304 176) (301 181) (300 186) (301 191) (306 192) (311 190) (316 187) (321 185) (325 181) (329 176) (332 172) (335 168) (336 164) (338 160) (340 156) (341 152) (341 148) (340 144) (340 140) (341 136) (343 132) (344 128) (345 124) (346 119) (348 115) (353 112) (358 110) (363 109) (368 108) (373 107) (378 105) (380 101) (383 97) (384 93) (386 89) (386 85) (386 81) (385 76) (384 71) (383 67) (381 62) (381 57) (380 53) (379 49) (378 45) (376 40) (373 35) (369 33) (365 32) (360 30) (356 28) (352 27) (348 26) (343 24) (337 22) (333 22) (329 21) (325 23) (321 27) (319 32) (319 37) (318 42) (318 48) (318 53) (319 58) (319 64) (318 69) (316 74) (315 79) (314 84) (314 89) (313 94) (313 99) (312 104) (312 109) (311 114) (310 119) (309 124) (308 129) (306 135) (305 140) (305 145) (304 150) (303 155) (306 146))) (REGION (TYPE "STRUCT") (ACTION "posterior horn \(gray\)") (ID 7) (CENTER-PT (168 151)) (COORD-LIST (145 99) (141 100) (137 101) (133 104) (131 109) (132 114) (134 119) (135 124) (137 129) (139 134) (142 139) (141 144) (139 149) (137 154) (136 159) (134 164) (134 169) (138 174) (143 174) (148 176) (154 177) (160 180) (166 184) (172 186) (177 188) (183 190) (188 192) (193 194) (198 196) (204 199) (209 201) (214 203) (219 205) (225 208) (230 207) (232 203) (232 199) (232 195) (232 191) (230 187) (226 185) (222 182) (218 179) (214 176) (211 172) (208 168) (206 164) (204 160) (202 156) (200 151) (198 147) (196 143) (194 139) (192 135) (189 131) (186 127) (183 123) (180 119) (176 117) (172 115) (167 111) (162 106) (158 103) (153 99) (149 97) (145 99))) (REGION (TYPE "STRUCT") (ACTION "posterior horn \(gray\)") (ID 6) (CENTER-PT (368 166)) (COORD-LIST (318 210) (318 206) (318 201) (316 197) (315 193) (315 189) (320 186) (325 183) (329 179) (332 175) (335 170) (337 166) (339 162) (340 158) (341 154) (341 149) (342 145) (342 141) (343 137) (345 132) (346 127) (347 123) (349 119) (349 115) (355 112) (360 111) (365 110) (370 107) (375 105) (379 101) (383 96) (388 93) (393 95) (397 100) (401 105) (402 110) (400 115) (399 120) (398 125) (397 130) (395 135) (394 140) (394 145) (394 150) (396 156) (398 161) (400 166) (405 169) (407 174) (403 177) (399 180) (395 182) (391 185) (386 188) (381 191) (376 194) (371 196) (367 198) (363 199) (359 200) (354 202) (349 204) (344 205) (339 206) (333 208) (329 209) (325 210) (320 210) (318 210))) (REGION (TYPE "STRUCT") (ACTION "anterior horn \(gray\)") (ID 5) (CENTER-PT (408 217)) (COORD-LIST (320 210) (321 215) (322 220) (323 225) (323 230) (324 235) (325 240) (325 245) (326 250) (327 255) (332 260) (337 262) (342 264) (347 265) (352 265) (358 265) (363 266) (368 266) (373 267) (378 267) (383 267) (388 265) (393 263) (399 260) (404 258) (409 255) (415 252) (420 251) (426 248) (431 246) (434 242) (437 238) (440 234) (443 230) (448 226) (452 221) (456 217) (457 213) (459 208) (456 204) (452 201) (446 197) (442 195) (438 192) (434 189) (430 187) (426 184) (422 182) (418 179) (413 176) (409 174) (405 174) (401 178) (397 181) (393 183) (389 186) (385 189) (381 191) (377 194) (373 197) (368 198) (364 199) (360 200) (356 201) (352 202) (348 204) (344 206) (340 207) (335 208) (320 210))) (REGION (TYPE "STRUCT") (ACTION "anterior horn \(gray\)") (ID 4) (CENTER-PT (155 223)) (COORD-LIST (224 209) (220 208) (215 206) (211 204) (207 201) (203 198) (199 195) (195 194) (191 192) (187 191) (183 190) (179 188) (174 187) (170 185) (166 183) (162 181) (158 179) (154 177) (150 175) (146 175) (142 175) (138 174) (134 175) (131 180) (129 185) (126 190) (122 195) (118 198) (114 201) (110 203) (105 205) (100 206) (96 208) (91 211) (87 213) (91 218) (94 223) (99 227) (104 231) (110 236) (115 240) (119 246) (123 251) (128 254) (136 260) (141 262) (147 264) (152 265) (157 269) (162 271) (167 272) (173 273) (178 271) (183 268) (188 265) (193 264) (198 266) (204 267) (210 268) (215 267) (218 263) (219 259) (219 255) (219 251) (219 247) (219 243) (219 239) (219 235) (219 231) (219 227) (219 223) (221 219) (224 215) (224 209))) (REGION (TYPE "STRUCT") (ACTION "central canal") (ID 3) (CENTER-PT (269 194)) (COORD-LIST (271 191) (267 192) (263 194) (266 199) (271 200) (276 199) (279 195) (271 191))) (REGION (TYPE "STRUCT") (ACTION "posterolateral fasciculus") (ID 2) (CENTER-PT (396 66)) (COORD-LIST (378 41) (379 46) (379 52) (380 57) (381 62) (383 67) (385 72) (385 77) (384 83) (384 89) (383 94) (388 94) (393 94) (398 94) (399 90) (401 86) (403 82) (404 78) (405 74) (409 70) (412 66) (414 62) (410 60) (406 57) (402 56) (398 54) (393 50) (389 46) (385 42) (378 41))) (REGION (TYPE "STRUCT") (ACTION "posterolateral fasciculus") (ID 1) (CENTER-PT (142 89)) (COORD-LIST (128 76) (129 81) (131 86) (132 91) (134 96) (134 101) (140 99) (146 98) (151 97) (153 93) (153 89) (151 85) (150 81) (148 77) (146 73) (144 69) (142 65) (138 64) (135 69) (128 76)))