TY - JOUR
T1 - Neural basis of recollection in first-episode major depression
AU - van Eijndhoven, Philip
AU - van Wingen, Guido
AU - Fernández, Guillén
AU - Rijpkema, Mark
AU - Pop-Purceleanu, Monica
AU - Verkes, Robbert Jan
AU - Buitelaar, Jan
AU - Tendolkar, Indira
PY - 2013
Y1 - 2013
N2 - Background. Patients with major depressive disorder (MDD) display impairments in recollection, which have been explained by both hippocampal and prefrontal dysfunction. Here, we used an event-related fMRI design, to dissociate hippocampal and prefrontal contributions to the neural processes involved in recollection success and recollection attempt early in the course of MDD. Methods. To disentangle state- and trait-effects of depression, we included 20 medication-naive patients with a first depressive episode, 20 medication-free patients recovered from a first episode, and 20 matched, healthy controls in an event-related fMRI study using a source recollection paradigm. Results. Group comparisons revealed that during the acute state of depression there is an increase in left prefrontal activity related to recollection attempt, while there were no differences in neural correlates of successful recollection. Conclusions. Our results indicate that in the early course of depression, depressive state is associated with increased left prefrontal activation during the attempt to recollect source information suggesting an increased need for executive control during recollection in MDD. In this sample of first-episode MDD patients we found no evidence for hippocampal dysfunction. Hum Brain Mapp, 2013. © 2012 Wiley Periodicals, Inc
AB - Background. Patients with major depressive disorder (MDD) display impairments in recollection, which have been explained by both hippocampal and prefrontal dysfunction. Here, we used an event-related fMRI design, to dissociate hippocampal and prefrontal contributions to the neural processes involved in recollection success and recollection attempt early in the course of MDD. Methods. To disentangle state- and trait-effects of depression, we included 20 medication-naive patients with a first depressive episode, 20 medication-free patients recovered from a first episode, and 20 matched, healthy controls in an event-related fMRI study using a source recollection paradigm. Results. Group comparisons revealed that during the acute state of depression there is an increase in left prefrontal activity related to recollection attempt, while there were no differences in neural correlates of successful recollection. Conclusions. Our results indicate that in the early course of depression, depressive state is associated with increased left prefrontal activation during the attempt to recollect source information suggesting an increased need for executive control during recollection in MDD. In this sample of first-episode MDD patients we found no evidence for hippocampal dysfunction. Hum Brain Mapp, 2013. © 2012 Wiley Periodicals, Inc
U2 - https://doi.org/10.1002/hbm.21439
DO - https://doi.org/10.1002/hbm.21439
M3 - Article
C2 - 22753179
SN - 1065-9471
VL - 34
SP - 283
EP - 294
JO - Human brain mapping
JF - Human brain mapping
IS - 2
ER -