Association Between Response Inhibition and Working Memory in Adult ADHD: A Link to Right Frontal Cortex Pathology? Export

@article{citeulike:1341591, abstract = {BACKGROUND: We sought to assess the relationship between response inhibition and working memory in adult patients with attention-deficit/hyperactivity disorder (ADHD) and neurosurgical patients with frontal lobe damage. METHODS: The stop-signal reaction time (SSRT) test and a spatial working memory (SWM) task were administered to 20 adult patients with ADHD and a group of matched controls. The same tasks were administered to 21 patients with lesions to right frontal cortex and 19 patients with left frontal lesions. RESULTS: The SSRT test, but not choice reaction time, was significantly associated with search errors on the SWM task in both the adult ADHD and right frontal patients. In the right frontal patients, impaired performance on both variables was correlated with the volume of damage to the inferior frontal gyrus. CONCLUSIONS: Response inhibition and working memory impairments in ADHD may stem from a common pathologic process rather than being distinct deficits. Such pathology could relate to right frontal-cortex abnormalities in ADHD, consistent with prior reports, as well as with the demonstration here of a significant association between SSRT and SWM in right frontal patients.}, address = {Department of Experimental Psychology (LC, TWR), and Department of Psychiatry University of Cambridge School of Clinical Medicine, Addenbrooke's Hospital.}, author = {Clark, Luke and Blackwell, Andrew D D. and Aron, Adam R R. and Turner, Danielle C C. and Dowson, Jonathan and Robbins, Trevor W W. and Sahakian, Barbara J J.}, citeulike-article-id = {1341591}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/j.biopsych.2006.07.020}, citeulike-linkout-1 = {http://view.ncbi.nlm.nih.gov/pubmed/17046725}, citeulike-linkout-2 = {http://www.hubmed.org/display.cgi?uids=17046725}, day = {12}, doi = {10.1016/j.biopsych.2006.07.020}, issn = {0006-3223}, journal = {Biol Psychiatry}, keywords = {adhd, rifg, spatial\_working\_memory, ssrt, wmc}, month = {October}, posted-at = {2007-05-29 19:48:41}, priority = {2}, title = {Association Between Response Inhibition and Working Memory in Adult ADHD: A Link to Right Frontal Cortex Pathology?}, url = {http://dx.doi.org/10.1016/j.biopsych.2006.07.020}, year = {2006} }

TY - JOUR ID - citeulike:1341591 L3 - citeulike-article-id:1341591 N2 - BACKGROUND: We sought to assess the relationship between response inhibition and working memory in adult patients with attention-deficit/hyperactivity disorder (ADHD) and neurosurgical patients with frontal lobe damage. METHODS: The stop-signal reaction time (SSRT) test and a spatial working memory (SWM) task were administered to 20 adult patients with ADHD and a group of matched controls. The same tasks were administered to 21 patients with lesions to right frontal cortex and 19 patients with left frontal lesions. RESULTS: The SSRT test, but not choice reaction time, was significantly associated with search errors on the SWM task in both the adult ADHD and right frontal patients. In the right frontal patients, impaired performance on both variables was correlated with the volume of damage to the inferior frontal gyrus. CONCLUSIONS: Response inhibition and working memory impairments in ADHD may stem from a common pathologic process rather than being distinct deficits. Such pathology could relate to right frontal-cortex abnormalities in ADHD, consistent with prior reports, as well as with the demonstration here of a significant association between SSRT and SWM in right frontal patients. JF - Biol Psychiatry SN - 0006-3223 AD - Department of Experimental Psychology (LC, TWR), and Department of Psychiatry University of Cambridge School of Clinical Medicine, Addenbrooke's Hospital. TI - Association Between Response Inhibition and Working Memory in Adult ADHD: A Link to Right Frontal Cortex Pathology? KW - adhd KW - rifg KW - spatial_working_memory KW - ssrt KW - wmc AU - Clark, Luke AU - Blackwell, Andrew D AU - Aron, Adam R AU - Turner, Danielle C AU - Dowson, Jonathan AU - Robbins, Trevor W AU - Sahakian, Barbara J PY - 2006/10/12/ UR - http://dx.doi.org/10.1016/j.biopsych.2006.07.020 ER -