{"id_concept_class": "", "creation_time": 1512660592353, "event_stamp": "2012-11-28T19:56:00", "def_id_user": "usr_4de5345b3b6a8", "def_event_stamp": "2012-11-28T19:56:00", "last_updated": 1512660592353, "def_id": "def_50b66c50cbccd", "name": "Symbol Counter Task", "alias": "", "definition_text": "Participants observe a stimulus sequence comprising triangles and rectangles, keeping two counts, one for the triangles and one for the rectangles. Once each stimulus appears, participants update the appropriate mental count and then press a key to proceed to the next trial. Garavan\u00e2\u0080\u0099s central \u00ef\u00ac\u0081nding was that the reaction times signaled by the key press were longer when the incremented counter was different from the counter incremented on the previous trial (a switch trial) than when the same counter was incremented again (a no-switch trial). Garavan interpreted this switch\u00e2\u0080\u0093no-switch reaction time (RT) difference (the \u00e2\u0080\u0098\u00e2\u0080\u0098switching effect\u00e2\u0080\u0099\u00e2\u0080\u0099) as an index of the time required to switch attention\r\nfrom one internal counter to another, suggesting that the internal focus of attention was limited in capacity. ", "id_user": "usr_4de5345b3b6a8", "id": "trm_50b66c50ca2ac", "type": "task", "conditions": [], "concepts": [], "indicators": [], "external_datasets": [], "implementations": [], "citation": [{"citation_pubname": "", "event_stamp": "2012-11-28T19:58:35", "citation_pmid": "", "citation_desc": "Gehring WJ, Bryck RL, Jonides J, Albin RL, Badre D. The mind\u00e2\u0080\u0099s eye, looking inward? In search of executive control in internal attention shifting. Psychophysiology. 2003;40(4):572\u00e2\u0080\u0093585.", "citation_type": "CTM", "citation_url": "", "citation_comment": "", "id_user": "usr_4de5345b3b6a8", "id": "cit_50b66cebb186d", "citation_source": "Manual", "citation_authors": "", "citation_pubdate": "", "relationship": "HASCITATION"}, {"citation_pubname": "", "event_stamp": "2012-11-28T19:56:30", "citation_pmid": "", "citation_desc": "Garavan, H. (1998). Serial attention within working memory. Memory & Cognition, 26, 263\u00e2\u0080\u0093276.", "citation_type": "CTM", "citation_url": "", "citation_comment": "", "id_user": "usr_4de5345b3b6a8", "id": "cit_50b66c6eb2576", "citation_source": "Manual", "citation_authors": "", "citation_pubdate": "", "relationship": "HASCITATION"}], "contrasts": [], "batteries": [], "disorders": []}