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Reflex

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814: 128: 879:, who is credited with formulating the concept of reflex action and explaining it scientifically. He introduced the term to describe involuntary movements triggered by external stimuli, which are mediated by the spinal cord and the nervous system, distinct from voluntary movements controlled by the brain. Hall's significant work on reflex function was detailed in his 1833 paper, "On the Reflex Function of the Medulla Oblongata and Medulla Spinalis," published in the 55: 664: 480: 829:. When a muscle is stretched at rest, the stretch reflex leads to contraction of the muscle, thereby opposing stretch (resistance reflex). This helps to stabilize posture. During voluntary movements, however, the intensity (gain) of the reflex is reduced or its sign is even reversed. This prevents resistance reflexes from impeding movements. 166:, which reorients a cat's body when falling to ensure safe landing. The simplest type of reflex, a short-latency reflex, has a single synapse, or junction, in the signaling pathway. Long-latency reflexes produce nerve signals that are transduced across multiple synapses before generating the reflex response. 872:", published posthumously in 1664. He described how the body could perform actions automatically in response to external stimuli without conscious thought. Descartes used the analogy of a mechanical statue to explain how sensory input could trigger motor responses in a deterministic and automatic manner. 736:
will typically grade the activity of a reflex on a scale from 0 to 4. While 2+ is considered normal, some healthy individuals are hypo-reflexive and register all reflexes at 1+, while others are hyper-reflexive and register all reflexes at 3+.
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Some might imagine that reflexes are immutable. In reality, however, most reflexes are flexible and can be substantially modified to match the requirements of the behavior in both vertebrates and invertebrates.
222:. Generally, decreased reflexes indicate a peripheral problem, and lively or exaggerated reflexes a central one. A stretch reflex is the contraction of a muscle in response to its lengthwise stretch. 155:, which evokes a target response. These neural signals do not always travel to the brain, so many reflexes are an automatic response to a stimulus that does not receive or need conscious thought. 832:
The underlying sites and mechanisms of reflex modulation are not fully understood. There is evidence that the output of sensory neurons is directly modulated during behavior—for example, through
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are, similarly, anatomical terms that refer to a type of nervous system that is more recent in terms of evolutionary development. There are autonomic reflexes and skeletal, somatic reflexes.
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is an anatomical concept and it refers to a loop consisting, in its simplest form, of a sensory nerve, the input, and a motor nerve, the output. Autonomic does not mean automatic. The term
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The simplest reflex is initiated by a stimulus, which activates an afferent nerve. The signal is then passed to a response neuron, which generates a response.
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An example of reflex reversal is depicted. Activating the same spinal reflex pathway can cause limb flexion while standing, and extension while walking.
1698:"Interaction between descending input and thoracic reflexes for joint coordination in cockroach: I. descending influence on thoracic sensory reflexes" 2098: 630:
Many of these reflexes are quite complex, requiring a number of synapses in a number of different nuclei in the central nervous system (e.g., the
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Many reflexes are fine-tuned to increase organism survival and self-defense. This is observed in reflexes such as the
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is an anatomical term and it refers to a type of nervous system in animals and humans that is very primitive.
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Depending on where you are, another way of grading is from –4 (absent) to +4 (clonus), where 0 is "normal".
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Breathing can also be considered both involuntary and voluntary, since breath can be held through
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The Circuitry of the Human Spinal Cord: Its Role in Motor Control and Movement Disorders
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Tsuji H, Misawa H, Takigawa T, Tetsunaga T, Yamane K, Oda Y, Ozaki T (2021-01-27).
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can also be regarded as reflex actions, according to some definitions of the term.
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Park HD, Barnoud C, Trang H, Kannape OA, Schaller K, Blanke O (February 6, 2020).
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The term "reflex" was introduced in the 19th century by the English physiologist
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have a number of other reflexes which are not seen in adults, referred to as
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Reflexes are found with varying levels of complexity in organisms with a
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10.1002/(SICI)1097-4695(199704)32:4<359::AID-NEU1>3.0.CO;2-5
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Martin JP, Guo P, Mu L, Harley CM, Ritzmann RE (November 2015).
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Nikoletseas Michael M. (2010) Behavioral and Neural Plasticity.
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Hsu LJ, Zelenin PV, Orlovsky GN, Deliagina TG (February 2017).
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While the reflexes above are stimulated mechanically, the term
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The concept of reflexes dates back to the 17th century with
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Other reflexes found in the central nervous system include:
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refers to the analogous reflex stimulated electrically, and
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is the contraction of a muscle in response to striking its
1554:"Central control components of a 'simple' stretch reflex" 151:. The signal is then transferred across the synapse to a 73: 728:, reflexes are often used to assess the health of the 1449:
Forssberg H, Grillner S, Rossignol S (August 1977).
2633: 2565: 2544: 2486: 2433: 2382: 2322: 2279: 2231: 2193: 2186: 2165: 2122: 1897:: CS1 maint: DOI inactive as of September 2024 ( 39:"Reflectory" redirects here. For the album, see 881:Philosophical Transactions of the Royal Society 469:Reflexes usually only observed in human infants 210:) provide information on the integrity of the 2360: 2099: 868:. Descartes introduced the idea in his work " 27:Automatic, involuntary response to a stimulus 8: 1655:Sauer AE, BĂĽschges A, Stein W (April 1997). 1552:Clarac F, Cattaert D, Le Ray D (May 2000). 825:A good example of reflex modulation is the 692:. Unsourced material may be challenged and 2367: 2353: 2345: 2190: 2106: 2092: 2084: 1852:The American Review of Respiratory Disease 973:. Massachusetts, Sinauer Associates, Inc. 844:and by descending signals from the brain. 1961: 1943: 1821: 1811: 1770: 1672: 1631: 1621: 1572: 1525: 1515: 1368: 1227: 1209: 1100: 712:Learn how and when to remove this message 218:. This information can be detected using 96:Learn how and when to remove this message 1845:Mitchell RA, Berger AJ (February 1975). 785:, with spread to adjacent muscle groups 739: 334: 126: 1696:Mu L, Ritzmann RE (December 20, 2007). 1292:BĂĽschges A, Manira AE (December 1998). 939: 1890: 1547: 1545: 7: 1986:"21.10B: Neural Mechanisms (Cortex)" 1179: 1177: 1089:The Journal of Comparative Neurology 690:adding citations to reliable sources 327:is the inverse of a stretch reflex. 1703:Journal of Comparative Physiology A 1271:10.1146/annurev.ne.16.030193.001405 307:for those stimulated to vibration. 1847:"Neural regulation of respiration" 1623:10.1523/JNEUROSCI.15-08-05623.1995 1517:10.1523/JNEUROSCI.06-05-01308.1986 511:, also known as the startle reflex 74:improve coverage for other species 25: 1604:Wolf H, Burrows M (August 1995). 1341:Tuthill JC, Azim E (March 2018). 331:Reflexes involving cranial nerves 2147:Lateralization of brain function 1498:Capaday C, Stein RB (May 1986). 662: 53: 2218:Somatosensory evoked potentials 1299:Current Opinion in Neurobiology 1026:10.1016/j.pneurobio.2006.04.001 1144:. Cambridge University Press. 1140:Pierrot-Deseilligny E (2005). 499:Asymmetrical tonic neck reflex 175:Autonomic vs skeletal reflexes 76:and discuss this issue on the 1: 2683:Symmetrical tonic neck reflex 1574:10.1016/s0166-2236(99)01535-0 1312:10.1016/S0959-4388(98)80115-3 1258:Annual Review of Neuroscience 995:Dictionary by Merriam-Webster 947:parveen (November 11, 2020). 646:, and the maintenance of the 530:Symmetrical tonic neck reflex 143:in the nervous system called 1469:10.1016/0006-8993(77)90710-7 854:internal intercostal muscles 1869:10.1164/arrd.1975.111.2.206 1610:The Journal of Neuroscience 1504:The Journal of Neuroscience 971:Neuroscience: Third Edition 2725: 1945:10.1038/s41467-019-13967-9 1211:10.1038/s41598-021-81874-5 913:Jumping Frenchmen of Maine 472: 38: 31: 2213:Auditory evoked potential 1861:American Thoracic Society 1800:The Journal of Physiology 1772:10.1016/j.cub.2015.09.044 1716:10.1007/s00359-007-0307-x 1370:10.1016/j.cub.2018.01.064 1008:Hultborn H (2006-02-01). 535:Tonic labyrinthine reflex 251:Extensor digitorum reflex 216:peripheral nervous system 68:excessively human-centric 1400:Bässler U (March 1976). 1014:Progress in Neurobiology 2676:Crossed extensor reflex 2425:Pharyngeal (gag) reflex 2416:Vestibulo-ocular reflex 2223:Visual evoked potential 1871:(inactive 2024-09-12). 1661:Journal of Neurobiology 1561:Trends in Neurosciences 1083:Price JL (2005-12-05). 623:Crossed extensor reflex 541:Other kinds of reflexes 428:Vestibulo-ocular reflex 202:The myotatic or muscle 170:Types of human reflexes 34:Reflex (disambiguation) 2451:Brachioradialis reflex 2392:Pupillary light reflex 2307:Long-term potentiation 2259:Postsynaptic potential 2203:Bereitschaftspotential 1407:Biological Cybernetics 991:"Definition of reflex" 834:presynaptic inhibition 818: 484: 350:Pupillary light reflex 305:tonic vibration reflex 241:Brachioradialis reflex 220:electromyography (EMG) 212:central nervous system 164:feline righting reflex 139:. A reflex occurs via 132: 2623:Churchill–Cope reflex 2578:Bezold–Jarisch reflex 2142:Intracranial pressure 1919:Nature Communications 816: 638:). Processes such as 482: 269:or knee-jerk reflex ( 130: 2545:Superficial reflexes 2420:Oculocephalic reflex 2397:Accommodation reflex 2312:Long-term depression 2287:Axoplasmic transport 686:improve this section 598:Photic sneeze reflex 397:, also known as the 367:Accommodation reflex 208:deep tendon reflexes 206:(sometimes known as 32:For other uses, see 2656:Golgi tendon reflex 2598:Oculocardiac reflex 2412:Caloric reflex test 2302:Synaptic plasticity 2294:/Nerve regeneration 1991:Medicine LibreTexts 1936:2020NatCo..11..289P 1763:2015CBio...25.2795M 1361:2018CBio...28.R194T 1251:Pearson KG (1993). 1202:2021NatSR..11.2284T 1069:The Free Dictionary 997:. 25 December 2023. 951:. Crack Your Target 561:Anocutaneous reflex 515:Palmar grasp reflex 325:Golgi tendon reflex 287:(Achilles reflex) ( 62:This article about 2613:Reflex tachycardia 2608:Reflex bradycardia 2557:Cremasteric reflex 2488:Primitive reflexes 2249:Membrane potential 2114:Physiology of the 1420:10.1007/BF00365594 1190:Scientific Reports 903:Conditioned reflex 898:Automatic behavior 842:ventral nerve cord 819: 577:Cremasteric reflex 556:Gastrocolic reflex 550:Abdominal reflexes 504:Palmomental reflex 492:primitive reflexes 485: 475:Primitive reflexes 133: 18:Involuntary action 2709:Animal physiology 2691: 2690: 2671:Withdrawal reflex 2573:Bainbridge reflex 2471:Ankle jerk reflex 2342: 2341: 2338: 2337: 2292:Neuroregeneration 2239:Neurotransmission 1757:(21): 2795–2803. 1170:978-1-4537-8945-2 1151:978-0-511-54504-7 1102:10.1002/cne.20750 809:Reflex modulation 803: 802: 722: 721: 714: 636:withdrawal reflex 618:Withdrawal reflex 466: 465: 285:Ankle jerk reflex 198:Myotatic reflexes 106: 105: 98: 16:(Redirected from 2716: 2666:Startle response 2641:List of reflexes 2552:Abdominal reflex 2435:Stretch reflexes 2369: 2362: 2355: 2346: 2254:Action potential 2232:Other short term 2195:Evoked potential 2191: 2108: 2101: 2094: 2085: 2078: 2077: 2075: 2073: 2067:Encyclopedia.com 2059: 2053: 2052: 2050: 2048: 2034: 2028: 2027: 2025: 2023: 2009: 2003: 2002: 2000: 1999: 1982: 1976: 1975: 1965: 1947: 1928:Nature Portfolio 1909: 1903: 1902: 1896: 1888: 1842: 1836: 1835: 1825: 1815: 1813:10.1113/JP272714 1791: 1785: 1784: 1774: 1742: 1736: 1735: 1693: 1687: 1686: 1676: 1652: 1646: 1645: 1635: 1625: 1601: 1595: 1594: 1576: 1558: 1549: 1540: 1539: 1529: 1519: 1495: 1489: 1488: 1446: 1440: 1439: 1397: 1391: 1390: 1372: 1355:(5): R194–R203. 1343:"Proprioception" 1338: 1332: 1331: 1289: 1283: 1282: 1248: 1242: 1241: 1231: 1213: 1181: 1172: 1162: 1156: 1155: 1137: 1131: 1130: 1104: 1080: 1074: 1073: 1060: 1054: 1053: 1020:(3–5): 215–232. 1005: 999: 998: 987: 981: 967: 961: 960: 958: 956: 944: 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2620: 2618: 2614: 2611: 2609: 2606: 2605: 2604: 2601: 2599: 2596: 2594: 2593:Diving reflex 2591: 2589: 2586: 2584: 2581: 2579: 2576: 2574: 2571: 2570: 2568: 2564: 2558: 2555: 2553: 2550: 2549: 2547: 2543: 2537: 2534: 2532: 2529: 2527: 2524: 2522: 2519: 2517: 2514: 2512: 2509: 2507: 2504: 2502: 2499: 2497: 2494: 2493: 2491: 2489: 2485: 2477: 2474: 2472: 2469: 2467: 2464: 2463: 2461: 2457: 2454: 2452: 2449: 2447: 2446:Biceps reflex 2444: 2443: 2441: 2440: 2438: 2436: 2432: 2426: 2423: 2421: 2417: 2413: 2410: 2408: 2405: 2403: 2400: 2398: 2395: 2393: 2390: 2389: 2387: 2385: 2384:Cranial nerve 2381: 2377: 2370: 2365: 2363: 2358: 2356: 2351: 2350: 2347: 2331: 2328: 2327: 2325: 2321: 2313: 2310: 2308: 2305: 2304: 2303: 2299: 2296: 2293: 2290: 2288: 2285: 2284: 2282: 2278: 2270: 2267: 2265: 2262: 2261: 2260: 2257: 2255: 2252: 2250: 2247: 2245: 2242: 2240: 2237: 2236: 2234: 2230: 2224: 2221: 2219: 2216: 2214: 2211: 2209: 2206: 2204: 2201: 2200: 2198: 2196: 2192: 2189: 2185: 2179: 2176: 2174: 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1491: 1486: 1482: 1478: 1474: 1470: 1466: 1463:(1): 121–39. 1462: 1458: 1457: 1452: 1445: 1442: 1437: 1433: 1429: 1425: 1421: 1417: 1413: 1409: 1408: 1403: 1396: 1393: 1388: 1384: 1380: 1376: 1371: 1366: 1362: 1358: 1354: 1350: 1349: 1344: 1337: 1334: 1329: 1325: 1321: 1317: 1313: 1309: 1305: 1301: 1300: 1295: 1288: 1285: 1280: 1276: 1272: 1268: 1264: 1260: 1259: 1254: 1247: 1244: 1239: 1235: 1230: 1225: 1221: 1217: 1212: 1207: 1203: 1199: 1195: 1191: 1187: 1180: 1178: 1174: 1171: 1167: 1161: 1158: 1153: 1147: 1143: 1136: 1133: 1128: 1124: 1120: 1116: 1112: 1108: 1103: 1098: 1094: 1090: 1086: 1079: 1076: 1071: 1070: 1065: 1059: 1056: 1051: 1047: 1043: 1039: 1035: 1031: 1027: 1023: 1019: 1015: 1011: 1004: 1001: 996: 992: 986: 983: 980: 979:0-87893-725-0 976: 972: 966: 963: 950: 943: 940: 933: 929: 926: 924: 921: 919: 916: 914: 911: 909: 906: 904: 901: 899: 896: 894: 891: 890: 886: 884: 882: 878: 877:Marshall Hall 873: 871: 867: 859: 857: 855: 847: 845: 843: 839: 835: 830: 828: 823: 815: 808: 806: 799: 796: 792: 789: 788: 784: 781: 777: 774: 773: 769: 766: 765: 761: 758: 757: 753: 750: 749: 745: 742: 741: 738: 735: 731: 727: 716: 713: 705: 695: 691: 687: 681: 680: 676: 671:This section 669: 665: 660: 659: 653: 651: 649: 645: 641: 637: 633: 632:escape reflex 624: 621: 620: 619: 616: 614: 611: 609: 606: 604: 601: 599: 596: 594: 591: 589: 586: 584: 583:Diving reflex 581: 578: 575: 573: 570: 568: 565: 562: 559: 557: 554: 551: 548: 547: 546: 540: 536: 533: 531: 528: 526: 523: 521: 518: 516: 513: 510: 507: 505: 502: 500: 497: 496: 495: 493: 489: 481: 476: 468: 462: 459: 457: 454: 452: 449: 448: 444: 440: 436: 434: 431: 429: 426: 425: 421: 418: 416: 413: 412: 409: 406: 403: 400: 396: 393: 392: 388: 386: 383: 381: 378: 377: 373: 370: 368: 365: 364: 361: 358: 356: 353: 351: 348: 347: 343: 340: 337: 336: 330: 328: 326: 322: 318: 317:tendon reflex 311:Tendon reflex 310: 308: 306: 302: 294: 290: 286: 283: 280: 276: 272: 268: 265: 262: 258: 255: 252: 249: 246: 242: 239: 236: 232: 228: 227:Biceps reflex 225: 224: 223: 221: 217: 213: 209: 205: 197: 195: 193: 189: 185: 181: 174: 169: 167: 165: 161: 156: 154: 150: 146: 142: 138: 129: 125: 123: 119: 118:reflex action 115: 111: 100: 97: 89: 79: 75: 69: 65: 60: 51: 50: 45: 43: 35: 30: 19: 2619:Respiratory 2375: 2172: 2070:. Retrieved 2066: 2057: 2045:. Retrieved 2041: 2032: 2020:. Retrieved 2016: 2007: 1996:. Retrieved 1994:. 2018-07-22 1989: 1980: 1923: 1917: 1907: 1893:cite journal 1856: 1850: 1840: 1803: 1799: 1789: 1754: 1750: 1740: 1707: 1701: 1691: 1664: 1660: 1650: 1613: 1609: 1599: 1564: 1560: 1507: 1503: 1493: 1460: 1454: 1444: 1414:(1): 47–49. 1411: 1405: 1395: 1352: 1346: 1336: 1306:(6): 733–9. 1303: 1297: 1287: 1262: 1256: 1246: 1193: 1189: 1160: 1141: 1135: 1092: 1088: 1078: 1067: 1058: 1017: 1013: 1003: 994: 985: 970: 965: 953:. Retrieved 942: 874: 863: 851: 831: 824: 820: 804: 794: 793:Hyperactive 779: 778:Hyperactive 746:Description 723: 708: 699: 684:Please help 672: 629: 588:Lazarus sign 572:Cough reflex 544: 491: 486: 483:Grasp reflex 314: 298: 207: 201: 191: 187: 183: 179: 178: 157: 153:motor neuron 134: 117: 113: 107: 92: 83: 67: 41: 29: 2661:Optokinetic 2501:Gastrocolic 2135:Wakefulness 1863:: 206–224. 1196:(1): 2284. 838:spinal cord 762:Hypoactive 509:Moro reflex 145:reflex arcs 2698:Categories 2603:Baroreflex 2531:Tonic neck 2269:Inhibitory 2264:Excitatory 2042:Britannica 2017:Britannica 1998:2022-09-10 1265:: 265–97. 934:References 790:4+ or ++++ 702:April 2023 567:Baroreflex 451:Gag reflex 42:Reflectory 2536:Parachute 2280:Long term 2244:Chronaxie 2178:Sensation 1954:2041-1723 1877:0003-0805 1428:1432-0770 1387:235330764 1220:2045-2322 1111:0021-9967 1034:0301-0082 923:Preflexes 775:3+ or +++ 770:"Normal" 673:does not 648:heartbeat 644:digestion 640:breathing 259:(C6, C7, 243:(C5, C6, 184:autonomic 78:talk page 2704:Reflexes 2651:H-reflex 2521:Stepping 2376:Reflexes 1972:32029711 1832:27589479 1781:26592340 1732:25167774 1724:18094976 1591:10113723 1583:10782125 1485:32578292 1436:12007820 1379:29510103 1328:18521928 1238:33504836 1127:18455906 1119:16255003 1050:25904937 1042:16716488 908:Instinct 887:See also 767:2+ or ++ 726:medicine 301:H-reflex 253:(C6, C7) 188:Skeletal 122:stimulus 2526:Sucking 2516:Rooting 2130:Arousal 2072:15 June 2047:15 June 2022:15 June 1963:7005287 1932:Bibcode 1930:: 289. 1885:1089375 1823:5285725 1759:Bibcode 1683:9087889 1642:7643206 1633:6577635 1536:3711981 1527:6568550 1357:Bibcode 1320:9914236 1279:8460894 1229:7840930 1198:Bibcode 955:3 April 860:History 780:without 759:1+ or + 734:Doctors 694:removed 679:sources 654:Grading 579:(L1-L2) 563:(S2-S4) 552:(T6-L1) 341:Sensory 192:somatic 149:synapse 110:biology 72:Please 66:may be 64:biology 44:(album) 2496:Galant 2173:Reflex 2157:Memory 1970:  1960:  1952:  1883:  1875:  1830:  1820:  1779:  1730:  1722:  1681:  1640:  1630:  1589:  1581:  1534:  1524:  1483:  1477:890471 1475:  1434:  1426:  1385:  1377:  1326:  1318:  1277:  1236:  1226:  1218:  1168:  1148:  1125:  1117:  1109:  1048:  1040:  1032:  977:  798:clonus 783:clonus 608:Sneeze 401:reflex 344:Motor 323:. The 321:tendon 180:Reflex 114:reflex 2634:Other 2506:Grasp 2323:Other 2152:Sleep 1926:(1). 1859:(2). 1728:S2CID 1587:S2CID 1557:(PDF) 1481:S2CID 1432:S2CID 1383:S2CID 1324:S2CID 1123:S2CID 1046:S2CID 743:Grade 437:III, 399:blink 116:, or 2511:Moro 2462:Leg 2442:Arm 2208:P300 2187:Both 2074:2024 2049:2024 2024:2024 1968:PMID 1950:ISSN 1899:link 1881:PMID 1873:ISSN 1828:PMID 1777:PMID 1720:PMID 1679:PMID 1638:PMID 1579:PMID 1532:PMID 1473:PMID 1424:ISSN 1375:PMID 1316:PMID 1275:PMID 1234:PMID 1216:ISSN 1166:ISBN 1146:ISBN 1115:PMID 1107:ISSN 1038:PMID 1030:ISSN 975:ISBN 957:2021 795:with 677:any 675:cite 433:VIII 422:VII 374:III 338:Name 214:and 112:, a 1958:PMC 1940:doi 1865:doi 1857:111 1818:PMC 1808:doi 1804:595 1767:doi 1712:doi 1708:194 1669:doi 1628:PMC 1618:doi 1569:doi 1522:PMC 1512:doi 1465:doi 1461:132 1416:doi 1365:doi 1308:doi 1267:doi 1224:PMC 1206:doi 1097:doi 1093:493 1022:doi 840:or 732:. 724:In 688:by 408:VII 360:III 190:or 108:In 2700:: 2065:. 2040:. 2015:. 1988:. 1966:. 1956:. 1948:. 1938:. 1924:11 1922:. 1916:. 1895:}} 1891:{{ 1879:. 1855:. 1849:. 1826:. 1816:. 1802:. 1798:. 1775:. 1765:. 1755:25 1753:. 1749:. 1726:. 1718:. 1706:. 1700:. 1677:. 1665:32 1663:. 1659:. 1636:. 1626:. 1614:15 1612:. 1608:. 1585:. 1577:. 1565:23 1563:. 1559:. 1544:^ 1530:. 1520:. 1506:. 1502:. 1479:. 1471:. 1459:. 1453:. 1430:. 1422:. 1412:24 1410:. 1404:. 1381:. 1373:. 1363:. 1353:28 1351:. 1345:. 1322:. 1314:. 1302:. 1296:. 1273:. 1263:16 1261:. 1255:. 1232:. 1222:. 1214:. 1204:. 1194:11 1192:. 1188:. 1176:^ 1121:. 1113:. 1105:. 1091:. 1087:. 1066:. 1044:. 1036:. 1028:. 1018:78 1016:. 1012:. 993:. 856:. 642:, 456:IX 445:+ 443:VI 441:, 439:IV 389:V 371:II 355:II 315:A 293:S2 291:, 289:S1 279:L4 277:, 275:L3 273:, 271:L2 261:C8 245:C7 235:C6 233:, 231:C5 124:. 2418:/ 2414:/ 2368:e 2361:t 2354:v 2300:/ 2107:e 2100:t 2093:v 2076:. 2051:. 2026:. 2001:. 1974:. 1942:: 1934:: 1901:) 1887:. 1867:: 1834:. 1810:: 1783:. 1769:: 1761:: 1734:. 1714:: 1685:. 1671:: 1644:. 1620:: 1593:. 1571:: 1538:. 1514:: 1508:6 1487:. 1467:: 1438:. 1418:: 1389:. 1367:: 1359:: 1330:. 1310:: 1304:8 1281:. 1269:: 1240:. 1208:: 1200:: 1154:. 1129:. 1099:: 1072:. 1052:. 1024:: 959:. 751:0 715:) 709:( 704:) 700:( 696:. 682:. 461:X 419:V 404:V 385:V 295:) 281:) 263:) 247:) 237:) 229:( 99:) 93:( 88:) 84:( 80:. 70:. 46:. 36:. 20:)

Index

Involuntary action
Reflex (disambiguation)
Reflectory (album)
biology
improve coverage for other species
talk page
Learn how and when to remove this message
biology
stimulus

nervous system
neural pathways
reflex arcs
synapse
motor neuron
startle reflex
feline righting reflex
stretch reflexes
central nervous system
peripheral nervous system
electromyography (EMG)
Biceps reflex
C5
C6
Brachioradialis reflex
C7
Extensor digitorum reflex
Triceps reflex
C8
Patellar reflex

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