| object-discrimination taskobject-discrimination task | task | No definition submitted yet |
| oculomotor delayed responseoculomotor delayed response | task | a task that requires an eye movement to be made to a cued location after a delay |
| oddball taskoddball task | task | A task in which stimuli are presented in a continuous stream and participants must detect the presence of an oddball stimulus. The oddball is a stimulus that occurs infrequently relative to all other stimuli, and has distinct characteristics (e... |
| Olfactory Monitor/DiscriminationOlfactory Monitor/Discrimination | task | Subjects are presented with odors and are instructed to smell them passively or to discriminate according to some feature (pleasant/unpleasant, strong/weak, same/different, etc.). (from the BrainMapLex... |
| operation span taskoperation span task | task | A task in which subjects are asked to perform a simple mathematical verification (e.g., 4/2 +1 = 3) and then read a word, with a recall test following some number of those verify/read pairs. The maximum number of words that can be recalled is the "operation span". |
| Orthographic DiscriminationOrthographic Discrimination | task | Subjects view letters and discriminate according to some feature (uppercase/lowercase, alphabetic order, same/different spelling of words, vowel/consonant, font size, etc.). (from the BrainMapLex.xls file located in the documentation section of: http://brainmap... |