| M. O`Connor (Department of Electrophysiology, London) | P850 |
| L. Oberberger (München) | P1965 |
| J. Obergassel (Hamburg) | V135, P852, P853, P1155, P1560 |
| V. Obermeier (München) | P1604 |
| D. Obradovic (Leipzig) | P1574, P1598, P1871 |
| B. O'Brien (Berlin) | P888 |
| D. Obrist (Bern, CH) | V409, P1974 |
| B. M. Quesada Ocete (Mainz) | P1173 |
| J. P. Ochoa (A Coruña, ES) | V1397 |
| L. Ochs (Köln) | V1427, P1568 |
| K. Odening (Bern, CH) | V1268, V1428 |
| M. Odenthal (Köln) | P814 |
| P. Oefner (Regensburg) | P792 |
| D. Oehler (Düsseldorf) | P1196, P1212, P1945, P1968 |
| C. Oeing (Berlin) | P441, V604, P799 |
| M. Oelze (Mainz) | P460, V594, V596, P821 |
| V. Oettinger (Freiburg im Breisgau) | P1595, P1859, P1905 |
| R. Oettl (Heidelberg) | P520 |
| S. Oeyen (Gent, BE) | V362 |
| F. Ofner (Regensburg) | P1551 |
| A. Ohlrogge (Hamburg) | P1824 |
| F. M. Ojeda (Hamburg) | V11, V113, V981, V1263, V1275 |
| R. Ola (Mannheim) | P1561 |
| D. Olbrich (Lübeck) | V341 |
| O. Oldenburg (Münster) | V1614 |
| M. Oldhafer (Hannover) | P836 |
| C. Olivier (Freiburg im Breisgau) | V948, P1198, P1908, P1955 |
| I. Olivotto (Florenz, IT) | P1506, V1719 |
| G. von Olshausen (München) | P497 |
| S.-C. Olthof (Tübingen) | P1901 |
| C. Omoregie (Ulm) | P504 |
| H. Omran (Bad Oeynhausen) | V1427, V1746 |
| H. Omran (Bonn) | V1619 |
| B. Ondruschka (Hamburg) | V916 |
| P. Ong (Stuttgart) | V307, V410, V675, V680, V1328 |
| J. Oo (Frankfurt am Main) | P439, P447 |
| J. Ooms (Rotterdam, NL) | V1425 |
| C. Opitz (Berlin) | V46, V632, V769, V773, V1051, V1790 |
| L. Opitz (Leipzig) | P826 |
| M. Orban (München) | V895, P1194, V1424, P1603 |
| M. Orban (München) | V1284, P1603, V1702, V1706 |
| M. Orecchioni (CA, US) | V34 |
| M. O'Reilly (Birmingham, UK) | V1725 |
| M. Orlowska (Leuven, BE) | P817 |
| A. Ortega-Alonso (Helsinki, FI) | V1278, P1930 |
| S. Orwat (Münster) | V179, V197, P1243 |
| C. O'Shea (Birmingham, UK) | V1725 |
| M. Osman (Portland, US) | V215 |
| M. Ost (Nuthetal) | V598 |
| R. Osteresch (Bremen) | V1070, P1214, P1566, P1584, P1611, P1823, P1883, P2019 |
| B. Ostermeier (Reutlingen) | V1263 |
| H. Oswald (Peine) | P857 |
| I. Oswald (Gießen) | V894 |
| W. Oswald (Graz) | P1960 |
| I. Ott (Pforzheim) | P1583, P1608 |
| S. Otto (Jena) | V12, V211, P846, P1249, V1282, V1400, V1401, V1403, P1502, P2018 |
| S. Oubari (Essen) | P1881 |
| F. Ouyang (Hamburg) | V135, V340, P488, P489, V571, V573, P835, P852, P1155, P1166, P1175 |
| S. Ovroutski (Berlin) | V322 |
| J. Ovsianas (Bad Rothenfelde) | P1526 |
| T. Owais (Augsburg) | P1874, P1911 |
| C. Owenier (Düsseldorf) | V32, P783 |