103 quickmood before scanning session 4 3 1 4 1 1 4 1 2 4 3 1 quickmood after scanning session 3 3 1 4 1 1 3 2 1 3 3 1 1 GE LX NVi 4T invspiral 0 4 1 RM NONE 1.5 Head,Obl,2D,invspiral 1970-01-01 00:00:00 3000 6 90 4 64 32 HEAD 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34 mm 64 108.28125 0 3.4375 -1 0 0 mm 64 103.739147868846 0 3.4375 0 -0.998687901875874 0.0512101029755428 mm 35 -83.4450942077764 0 3.99942057491581 0 0.0512147545814514 0.99868768453598 ms 147 0 0 3000 lsbfirst int16 sirp.103.1.nifti.img 0 42147840 Sternberg Item Recognition Paradigm (SIRP) 231631 2 + 233631 4 + 235631 6 + 237631 8 + 239631 10 + 241631 12 + 288831 29 + 290831 31 + 292831 33 + 352788 56 + 354788 58 + 356788 60 + 358788 62 + 411770 83 + 413770 85 + 454206 103 + 456206 105 + 458206 107 + 517884 130 + 519884 132 + 521884 134 + 523884 136 + 564061 154 + 566061 156 + 568061 158 + 616344 177 + 618344 179 + 246051 listone 13 300142 listone 14 301939 listone 15 304858 listone 16 307676 listone 17 310612 listone 18 364458 listone 19 367185 listone 20 369543 listone 21 464405 listone 22 466919 listone 23 470128 listone 24 473411 listone 25 476086 listone 26 574164 listone 27 624427 listfive 36 626873 listfive 37 629338 listfive 38 251792 4 14 254814 9 15 257260 3 16 260175 4 17 262411 4 18 265155 9 19 267887 4 20 270256 8 21 273904 0 22 276490 4 23 278206 4 24 281853 5 25 284829 2 26 286479 4 27 316092 6 41 318927 7 42 321377 3 43 324063 3 44 326098 7 45 329297 5 46 331519 5 47 334798 4 48 337613 1 49 340519 4 50 343111 8 51 345323 7 52 348284 0 53 350491 9 54 374799 2 68 377530 3 69 379810 5 70 383084 3 71 386100 6 72 388417 9 73 390706 2 74 393608 9 75 396491 4 76 399367 7 77 401926 1 78 405004 5 79 406779 1 80 410311 2 81 481401 7 115 483452 0 116 486764 5 117 488556 9 118 491967 8 119 494329 1 120 496936 3 121 500258 6 122 502404 2 123 505606 7 124 508517 1 125 510287 8 126 512664 3 127 516526 4 128 579421 0 162 582343 6 163 584226 4 164 587834 7 165 589615 3 166 592801 5 167 595605 4 168 598417 2 169 601260 4 170 603694 4 171 606398 4 172 608536 4 173 612242 4 174 614906 5 175 634753 0 185 638000 6 186 640268 6 187 643441 4 188 645835 7 189 648823 5 190 650588 8 191 654025 2 192 655814 4 193 659744 6 194 662025 8 195 664736 3 196 666834 3 197 669589 8 198 252387 595 1 1 14 255319 505 4 4 15 257840 580 4 4 16 260661 486 1 1 17 262898 487 1 1 18 265641 486 4 4 19 268329 442 1 1 20 270683 427 4 4 21 274499 595 4 4 22 277081 591 1 1 23 278741 535 1 1 24 282347 494 4 4 25 285679 850 4 4 26 287082 603 1 1 27 316646 554 4 4 41 319457 530 4 4 42 321994 617 4 4 43 324662 599 4 4 44 326894 796 4 4 45 330022 725 1 1 46 331973 454 1 1 47 335365 567 1 1 48 338169 556 4 4 49 341039 520 1 1 50 343857 746 1 1 51 346184 861 4 4 52 348805 521 1 1 53 351286 795 1 1 54 375559 760 1 1 68 378099 569 1 1 69 380334 524 1 1 70 383589 505 1 1 71 386873 773 4 4 72 389074 657 4 4 73 391285 579 1 1 74 394289 681 4 4 75 397275 784 4 4 76 399826 459 4 4 77 402614 688 4 4 78 405664 660 1 1 79 407515 736 4 4 80 410907 596 1 1 81 482157 756 1 1 115 483975 523 4 4 116 487437 673 4 4 117 489185 629 1 1 118 492445 478 1 1 119 494943 614 4 4 120 0 0 4 121 500814 556 1 1 122 502969 565 1 1 123 505985 379 1 1 124 509122 605 4 4 125 510828 541 1 1 126 513196 532 4 4 127 517152 626 4 4 128 580063 642 4 4 162 582926 583 4 4 163 584902 676 1 1 164 588299 465 4 4 165 590230 615 4 4 166 593365 564 4 4 167 596183 578 1 1 168 599020 603 4 4 169 601987 727 1 1 170 604157 463 1 1 171 607034 636 1 1 172 609168 632 1 1 173 612703 461 1 1 174 615625 719 4 4 175 635548 795 1 1 185 638574 574 1 1 186 640769 501 1 1 187 644146 705 4 4 188 646423 588 4 4 189 649298 475 4 4 190 651186 598 1 1 191 654660 635 4 4 192 656431 617 4 4 193 660329 585 1 1 194 662597 572 1 1 195 665365 629 4 4 196 667445 611 4 4 197 670175 586 1 1 198 encode 13 probe 14 probe 15 probe 16 probe 17 probe 18 probe 19 probe 20 probe 21 probe 22 probe 23 probe 24 probe 25 probe 26 probe 27 encode 36 encode 37 encode 38 encode 39 encode 40 probe 41 probe 42 probe 43 probe 44 probe 45 probe 46 probe 47 probe 48 probe 49 probe 50 probe 51 probe 52 probe 53 probe 54 encode 65 encode 66 encode 67 probe 68 probe 69 probe 70 probe 71 probe 72 probe 73 probe 74 probe 75 probe 76 probe 77 probe 78 probe 79 probe 80 probe 81 present 88 present 89 present 90 present 91 present 92 present 93 present 94 present 95 present 96 present 97 present 98 present 99 present 100 present 101 encode 110 encode 111 encode 112 encode 113 encode 114 probe 115 probe 116 probe 117 probe 118 probe 119 probe 120 probe 121 probe 122 probe 123 probe 124 probe 125 probe 126 probe 127 probe 128 present 139 present 140 present 141 present 142 present 143 present 144 present 145 present 146 present 147 present 148 present 149 present 150 present 151 present 152 encode 161 probe 162 probe 163 probe 164 probe 165 probe 166 probe 167 probe 168 probe 169 probe 170 probe 171 probe 172 probe 173 probe 174 probe 175 encode 182 encode 183 encode 184 probe 185 probe 186 probe 187 probe 188 probe 189 probe 190 probe 191 probe 192 probe 193 probe 194 probe 195 probe 196 probe 197 probe 198 listone 13 listone 14 listone 15 listone 16 listone 17 listone 18 listone 19 listone 20 listone 21 listone 22 listone 23 listone 24 listone 25 listone 26 listone 27 listfive 36 listfive 37 listfive 38 listfive 39 listfive 40 listfive 41 listfive 42 listfive 43 listfive 44 listfive 45 listfive 46 listfive 47 listfive 48 listfive 49 listfive 50 listfive 51 listfive 52 listfive 53 listfive 54 listthree 65 listthree 66 listthree 67 listthree 68 listthree 69 listthree 70 listthree 71 listthree 72 listthree 73 listthree 74 listthree 75 listthree 76 listthree 77 listthree 78 listthree 79 listthree 80 listthree 81 listarrows 88 listarrows 89 listarrows 90 listarrows 91 listarrows 92 listarrows 93 listarrows 94 listarrows 95 listarrows 96 listarrows 97 listarrows 98 listarrows 99 listarrows 100 listarrows 101 listfive 110 listfive 111 listfive 112 listfive 113 listfive 114 listfive 115 listfive 116 listfive 117 listfive 118 listfive 119 listfive 120 listfive 121 listfive 122 listfive 123 listfive 124 listfive 125 listfive 126 listfive 127 listfive 128 listarrows 139 listarrows 140 listarrows 141 listarrows 142 listarrows 143 listarrows 144 listarrows 145 listarrows 146 listarrows 147 listarrows 148 listarrows 149 listarrows 150 listarrows 151 listarrows 152 listone 161 listone 162 listone 163 listone 164 listone 165 listone 166 listone 167 listone 168 listone 169 listone 170 listone 171 listone 172 listone 173 listone 174 listone 175 listthree 182 listthree 183 listthree 184 listthree 185 listthree 186 listthree 187 listthree 188 listthree 189 listthree 190 listthree 191 listthree 192 listthree 193 listthree 194 listthree 195 listthree 196 listthree 197 listthree 198 ***** _***_ __*__ 417374 -> 88 419887 <- 89 422013 <- 90 425926 <- 91 427489 <- 92 431049 <- 93 433422 -> 94 436139 <- 95 439250 -> 96 441887 -> 97 444476 -> 98 446736 -> 99 449752 <- 100 452919 -> 101 527709 <- 139 529550 <- 140 532844 <- 141 534534 -> 142 538282 <- 143 540370 -> 144 542691 -> 145 545465 -> 146 548704 <- 147 551600 -> 148 554459 <- 149 556397 <- 150 559160 -> 151 562479 -> 152 418005 631 4 4 88 420330 443 1 1 89 422425 412 1 1 90 426462 536 1 1 91 427920 431 1 1 92 431490 441 1 1 93 433810 388 4 4 94 436597 458 1 1 95 439612 362 4 4 96 442279 392 4 4 97 444848 372 4 4 98 447122 386 4 4 99 450167 415 1 1 100 453325 406 4 4 101 528183 474 1 1 139 530112 562 1 1 140 533277 433 1 1 141 534928 394 4 4 142 538615 333 1 1 143 540739 369 4 4 144 543208 517 4 4 145 545868 403 4 4 146 549117 413 1 1 147 552001 401 4 4 148 554907 448 1 1 149 556960 563 1 1 150 559534 374 4 4 151 562914 435 4 4 152 569 13 wait time before an arrow, encode digit, or probe 907 14 wait time before an arrow, encode digit, or probe 1229 15 wait time before an arrow, encode digit, or probe 975 16 wait time before an arrow, encode digit, or probe 1190 17 wait time before an arrow, encode digit, or probe 726 18 wait time before an arrow, encode digit, or probe 770 19 wait time before an arrow, encode digit, or probe 802 20 wait time before an arrow, encode digit, or probe 471 21 wait time before an arrow, encode digit, or probe 1419 22 wait time before an arrow, encode digit, or probe 1305 23 wait time before an arrow, encode digit, or probe 321 24 wait time before an arrow, encode digit, or probe 1268 25 wait time before an arrow, encode digit, or probe 1544 26 wait time before an arrow, encode digit, or probe 494 27 wait time before an arrow, encode digit, or probe 1503 36 wait time before an arrow, encode digit, or probe 600 37 wait time before an arrow, encode digit, or probe 819 38 wait time before an arrow, encode digit, or probe 937 39 wait time before an arrow, encode digit, or probe 1173 40 wait time before an arrow, encode digit, or probe 1250 41 wait time before an arrow, encode digit, or probe 1385 42 wait time before an arrow, encode digit, or probe 1135 43 wait time before an arrow, encode digit, or probe 1121 44 wait time before an arrow, encode digit, or probe 456 45 wait time before an arrow, encode digit, or probe 955 46 wait time before an arrow, encode digit, or probe 477 47 wait time before an arrow, encode digit, or probe 1056 48 wait time before an arrow, encode digit, or probe 1171 49 wait time before an arrow, encode digit, or probe 1377 50 wait time before an arrow, encode digit, or probe 1269 51 wait time before an arrow, encode digit, or probe 781 52 wait time before an arrow, encode digit, or probe 1042 53 wait time before an arrow, encode digit, or probe 549 54 wait time before an arrow, encode digit, or probe 1437 65 wait time before an arrow, encode digit, or probe 1464 66 wait time before an arrow, encode digit, or probe 1122 67 wait time before an arrow, encode digit, or probe 975 68 wait time before an arrow, encode digit, or probe 1006 69 wait time before an arrow, encode digit, or probe 586 70 wait time before an arrow, encode digit, or probe 1160 71 wait time before an arrow, encode digit, or probe 1476 72 wait time before an arrow, encode digit, or probe 1093 73 wait time before an arrow, encode digit, or probe 682 74 wait time before an arrow, encode digit, or probe 884 75 wait time before an arrow, encode digit, or probe 1067 76 wait time before an arrow, encode digit, or probe 1243 77 wait time before an arrow, encode digit, or probe 1102 78 wait time before an arrow, encode digit, or probe 1480 79 wait time before an arrow, encode digit, or probe 555 80 wait time before an arrow, encode digit, or probe 1387 81 wait time before an arrow, encode digit, or probe 1114 88 wait time before an arrow, encode digit, or probe 927 89 wait time before an arrow, encode digit, or probe 353 90 wait time before an arrow, encode digit, or probe 1566 91 wait time before an arrow, encode digit, or probe 429 92 wait time before an arrow, encode digit, or probe 1289 93 wait time before an arrow, encode digit, or probe 962 94 wait time before an arrow, encode digit, or probe 979 95 wait time before an arrow, encode digit, or probe 1390 96 wait time before an arrow, encode digit, or probe 1327 97 wait time before an arrow, encode digit, or probe 1216 98 wait time before an arrow, encode digit, or probe 776 99 wait time before an arrow, encode digit, or probe 1092 100 wait time before an arrow, encode digit, or probe 1559 101 wait time before an arrow, encode digit, or probe 670 110 wait time before an arrow, encode digit, or probe 484 111 wait time before an arrow, encode digit, or probe 993 112 wait time before an arrow, encode digit, or probe 1576 113 wait time before an arrow, encode digit, or probe 1551 114 wait time before an arrow, encode digit, or probe 1463 115 wait time before an arrow, encode digit, or probe 814 116 wait time before an arrow, encode digit, or probe 1426 117 wait time before an arrow, encode digit, or probe 518 118 wait time before an arrow, encode digit, or probe 1229 119 wait time before an arrow, encode digit, or probe 891 120 wait time before an arrow, encode digit, or probe 798 121 wait time before an arrow, encode digit, or probe 1420 122 wait time before an arrow, encode digit, or probe 866 123 wait time before an arrow, encode digit, or probe 1368 124 wait time before an arrow, encode digit, or probe 1579 125 wait time before an arrow, encode digit, or probe 649 126 wait time before an arrow, encode digit, or probe 326 127 wait time before an arrow, encode digit, or probe 1488 128 wait time before an arrow, encode digit, or probe 1597 139 wait time before an arrow, encode digit, or probe 735 140 wait time before an arrow, encode digit, or probe 1329 141 wait time before an arrow, encode digit, or probe 319 142 wait time before an arrow, encode digit, or probe 1367 143 wait time before an arrow, encode digit, or probe 755 144 wait time before an arrow, encode digit, or probe 376 145 wait time before an arrow, encode digit, or probe 450 146 wait time before an arrow, encode digit, or probe 989 147 wait time before an arrow, encode digit, or probe 1185 148 wait time before an arrow, encode digit, or probe 1344 149 wait time before an arrow, encode digit, or probe 582 150 wait time before an arrow, encode digit, or probe 645 151 wait time before an arrow, encode digit, or probe 1264 152 wait time before an arrow, encode digit, or probe 1169 161 wait time before an arrow, encode digit, or probe 1023 162 wait time before an arrow, encode digit, or probe 1245 163 wait time before an arrow, encode digit, or probe 428 164 wait time before an arrow, encode digit, or probe 1336 165 wait time before an arrow, encode digit, or probe 417 166 wait time before an arrow, encode digit, or probe 903 167 wait time before an arrow, encode digit, or probe 1007 168 wait time before an arrow, encode digit, or probe 1119 169 wait time before an arrow, encode digit, or probe 1262 170 wait time before an arrow, encode digit, or probe 996 171 wait time before an arrow, encode digit, or probe 1000 172 wait time before an arrow, encode digit, or probe 438 173 wait time before an arrow, encode digit, or probe 1444 174 wait time before an arrow, encode digit, or probe 1408 175 wait time before an arrow, encode digit, or probe 1342 182 wait time before an arrow, encode digit, or probe 1088 183 wait time before an arrow, encode digit, or probe 853 184 wait time before an arrow, encode digit, or probe 865 185 wait time before an arrow, encode digit, or probe 1412 186 wait time before an arrow, encode digit, or probe 980 187 wait time before an arrow, encode digit, or probe 1453 188 wait time before an arrow, encode digit, or probe 1147 189 wait time before an arrow, encode digit, or probe 1435 190 wait time before an arrow, encode digit, or probe 500 191 wait time before an arrow, encode digit, or probe 1237 192 wait time before an arrow, encode digit, or probe 326 193 wait time before an arrow, encode digit, or probe 1556 194 wait time before an arrow, encode digit, or probe 1137 195 wait time before an arrow, encode digit, or probe 1148 196 wait time before an arrow, encode digit, or probe 546 197 wait time before an arrow, encode digit, or probe 601 198 wait time before an arrow, encode digit, or probe 3731 13 wait time after an arrow, encode digit, or probe 693 14 wait time after an arrow, encode digit, or probe 371 15 wait time after an arrow, encode digit, or probe 625 16 wait time after an arrow, encode digit, or probe 410 17 wait time after an arrow, encode digit, or probe 874 18 wait time after an arrow, encode digit, or probe 830 19 wait time after an arrow, encode digit, or probe 798 20 wait time after an arrow, encode digit, or probe 1129 21 wait time after an arrow, encode digit, or probe 181 22 wait time after an arrow, encode digit, or probe 295 23 wait time after an arrow, encode digit, or probe 1279 24 wait time after an arrow, encode digit, or probe 332 25 wait time after an arrow, encode digit, or probe 56 26 wait time after an arrow, encode digit, or probe 1106 27 wait time after an arrow, encode digit, or probe 97 36 wait time after an arrow, encode digit, or probe 1000 37 wait time after an arrow, encode digit, or probe 781 38 wait time after an arrow, encode digit, or probe 663 39 wait time after an arrow, encode digit, or probe 3127 40 wait time after an arrow, encode digit, or probe 350 41 wait time after an arrow, encode digit, or probe 215 42 wait time after an arrow, encode digit, or probe 465 43 wait time after an arrow, encode digit, or probe 479 44 wait time after an arrow, encode digit, or probe 1144 45 wait time after an arrow, encode digit, or probe 645 46 wait time after an arrow, encode digit, or probe 1123 47 wait time after an arrow, encode digit, or probe 544 48 wait time after an arrow, encode digit, or probe 429 49 wait time after an arrow, encode digit, or probe 223 50 wait time after an arrow, encode digit, or probe 331 51 wait time after an arrow, encode digit, or probe 819 52 wait time after an arrow, encode digit, or probe 558 53 wait time after an arrow, encode digit, or probe 1051 54 wait time after an arrow, encode digit, or probe 163 65 wait time after an arrow, encode digit, or probe 136 66 wait time after an arrow, encode digit, or probe 3178 67 wait time after an arrow, encode digit, or probe 625 68 wait time after an arrow, encode digit, or probe 594 69 wait time after an arrow, encode digit, or probe 1014 70 wait time after an arrow, encode digit, or probe 440 71 wait time after an arrow, encode digit, or probe 124 72 wait time after an arrow, encode digit, or probe 507 73 wait time after an arrow, encode digit, or probe 918 74 wait time after an arrow, encode digit, or probe 716 75 wait time after an arrow, encode digit, or probe 533 76 wait time after an arrow, encode digit, or probe 357 77 wait time after an arrow, encode digit, or probe 498 78 wait time after an arrow, encode digit, or probe 120 79 wait time after an arrow, encode digit, or probe 1045 80 wait time after an arrow, encode digit, or probe 213 81 wait time after an arrow, encode digit, or probe 486 88 wait time after an arrow, encode digit, or probe 673 89 wait time after an arrow, encode digit, or probe 1247 90 wait time after an arrow, encode digit, or probe 34 91 wait time after an arrow, encode digit, or probe 1171 92 wait time after an arrow, encode digit, or probe 311 93 wait time after an arrow, encode digit, or probe 638 94 wait time after an arrow, encode digit, or probe 621 95 wait time after an arrow, encode digit, or probe 210 96 wait time after an arrow, encode digit, or probe 273 97 wait time after an arrow, encode digit, or probe 384 98 wait time after an arrow, encode digit, or probe 824 99 wait time after an arrow, encode digit, or probe 508 100 wait time after an arrow, encode digit, or probe 41 101 wait time after an arrow, encode digit, or probe 930 110 wait time after an arrow, encode digit, or probe 1116 111 wait time after an arrow, encode digit, or probe 607 112 wait time after an arrow, encode digit, or probe 24 113 wait time after an arrow, encode digit, or probe 2749 114 wait time after an arrow, encode digit, or probe 137 115 wait time after an arrow, encode digit, or probe 786 116 wait time after an arrow, encode digit, or probe 174 117 wait time after an arrow, encode digit, or probe 1082 118 wait time after an arrow, encode digit, or probe 371 119 wait time after an arrow, encode digit, or probe 709 120 wait time after an arrow, encode digit, or probe 802 121 wait time after an arrow, encode digit, or probe 180 122 wait time after an arrow, encode digit, or probe 734 123 wait time after an arrow, encode digit, or probe 232 124 wait time after an arrow, encode digit, or probe 21 125 wait time after an arrow, encode digit, or probe 951 126 wait time after an arrow, encode digit, or probe 1274 127 wait time after an arrow, encode digit, or probe 112 128 wait time after an arrow, encode digit, or probe 3 139 wait time after an arrow, encode digit, or probe 865 140 wait time after an arrow, encode digit, or probe 271 141 wait time after an arrow, encode digit, or probe 1281 142 wait time after an arrow, encode digit, or probe 233 143 wait time after an arrow, encode digit, or probe 845 144 wait time after an arrow, encode digit, or probe 1224 145 wait time after an arrow, encode digit, or probe 1150 146 wait time after an arrow, encode digit, or probe 611 147 wait time after an arrow, encode digit, or probe 415 148 wait time after an arrow, encode digit, or probe 256 149 wait time after an arrow, encode digit, or probe 1018 150 wait time after an arrow, encode digit, or probe 955 151 wait time after an arrow, encode digit, or probe 336 152 wait time after an arrow, encode digit, or probe 3131 161 wait time after an arrow, encode digit, or probe 577 162 wait time after an arrow, encode digit, or probe 355 163 wait time after an arrow, encode digit, or probe 1172 164 wait time after an arrow, encode digit, or probe 264 165 wait time after an arrow, encode digit, or probe 1183 166 wait time after an arrow, encode digit, or probe 697 167 wait time after an arrow, encode digit, or probe 593 168 wait time after an arrow, encode digit, or probe 481 169 wait time after an arrow, encode digit, or probe 338 170 wait time after an arrow, encode digit, or probe 604 171 wait time after an arrow, encode digit, or probe 600 172 wait time after an arrow, encode digit, or probe 1162 173 wait time after an arrow, encode digit, or probe 156 174 wait time after an arrow, encode digit, or probe 192 175 wait time after an arrow, encode digit, or probe 258 182 wait time after an arrow, encode digit, or probe 512 183 wait time after an arrow, encode digit, or probe 3447 184 wait time after an arrow, encode digit, or probe 735 185 wait time after an arrow, encode digit, or probe 188 186 wait time after an arrow, encode digit, or probe 620 187 wait time after an arrow, encode digit, or probe 147 188 wait time after an arrow, encode digit, or probe 453 189 wait time after an arrow, encode digit, or probe 165 190 wait time after an arrow, encode digit, or probe 1100 191 wait time after an arrow, encode digit, or probe 363 192 wait time after an arrow, encode digit, or probe 1274 193 wait time after an arrow, encode digit, or probe 44 194 wait time after an arrow, encode digit, or probe 463 195 wait time after an arrow, encode digit, or probe 452 196 wait time after an arrow, encode digit, or probe 1054 197 wait time after an arrow, encode digit, or probe 999 198 wait time after an arrow, encode digit, or probe Sternberg Item Recognition Paradigm (SIRP) Total task time: 7:27 (includes 2 DDAs w/TR = 3s) Time Frames: 149 The SIRP is a working memory task that consists of four conditions: 3 working memory (WM) and 1 arrows condition. Total task time: 441s (not including 6s for discarded acquisitions). Stimuli are projected onto a screen positioned on the head coil with E-Prime programming software. Subjects respond by pressing a keypad with their thumbs on either side, e.g. the subject's left thumb will press button "1" and the right thumb, button "4". Subjects are to respond as accurately and quickly as possible. The order of the four conditions will pseudorandomly. In between conditions, subjects fixate on a flashing cross. Psychophysical data include button box responses. Data is analyzed in E-Data Aid using the analysis file: meanacc1.anl. The screen is set for 1024x768. WM conditions: Each WM condition begins with the prompt "LEARN [*]", with 1, 3, or 5 asterisks and a 2s duration. This alerts the subject to memorize the digit(s) that follow, and to indicate how many targets there are. If there are 5 targets, the display shows: LEARN ***** Likewise, if there are 3 targets, the 5 asterisks are replaced by "-***-" so that the same visual extent is used. If there is 1 target, "--*--" is displayed. This prompt is followed by an "encode" epoch consisting of the sequential presentation of a set of targets (digits). The targets are presented in red. The inter-digit time interval between targets is 2.7 s. This consists of a random jitter ranging from 0.3 to 1.6s, and a 1.1s display of the target digit. Following the encode epoch, there are a 2.7 s "delay" and a longer "probe" epoch. During the probe epoch, subjects are shown 14 WM probes in green. Half the subjects respond with a right trigger press if the digit is a target (a member of the memorized set) and a left trigger press, if the digit is a foil (not a member of the memorized set). The other half the subjects respond to targets and foils with the opposite hands. Within each WM condition, half of the probes are targets, half are foils, and each member of the target set is presented at least once. The timing of the probe digits is the same as in the encoding interval: 2.7 s, made up of random jitter around a 1.1 s display. The probe epoch lasts 37.8 s. Arrows condition: The arrows condition also lasts 37.8s, and consists of the display of 14 sequentially presented arrows pointing right or left (half point right and half point left, selected at random). Subjects respond by pressing the corresponding button (left button press for arrows that point to the left and a right button press for arrows that point to the right). The timing of each arrow is the same as the targets and probes; the interval between targets is 2.7 s and consists of a random jitter ranging from 0.3 to 1.6s, and a 1.1s display of the target. Arrows are presented in green. This condition requires a visually-guided rather than a memory-guided motor response. Fixation condition and timing: During fixation epochs, a single, flickering cross-hair ("+") appears at which time the subject relaxes. The flickering interval is 2s: 1.85s on, and 0.15s off, (with exception to the first interval, which lasts 2.8s). A fixation epoch occurs at the beginning of each block of the WM and Arrows conditions (8 fixation epochs total). There are two forms of the E-Prime script for this task: 1. SIRP_[version number].es (script initiates scanner) The scan sequence begins by sending out a scan trigger on line 5, counts down 6s (2 TRs), and starts with a fixation block. To modify the scan trigger line in E-Prime, double click on the "ScanTrig" icon found in the structure pane (if you do not see this pane already, go to "View" located in the program toolbar, and select "Structure"). In the ScanTrig window, delete the number "5" in: "SRbox.lamps '5'" and type in a new number. 2. SIRP_wait_[version number].es (scanner initiates script) The scanner is started manually and launches E-Prime by sending a script trigger on line 5. The wait object in E-Prime delays the program until it receives a trigger from the scanner on line 5. To modify the E-Prime trigger in E-Prime, double click on "Wait1" icon found in the structure pane (if you do not see this pane already, go to "View" located in the program toolbar, and select "Structure"). In the Wait1 window, modify the "Allowable" field under "Response Options." Click "OK."