TY - JOUR
T1 - Priming reduces input activity in right posterior cortex during stem completion
AU - Badgaiyan, Rajendra D.
AU - Posner, Michael I.
PY - 1996/1/1
Y1 - 1996/1/1
N2 - A recent positron emission tomography (PET) study showed reduced blood flow in the right posterior cortex for primed words during a stem completion task, suggesting reduction in processing demand in this area for primed tasks. The time course of this attenuation was studied using event-related potentials (ERPs) in 40 normal subjects. As compared to the unprimed stems, primed stems elicited significantly less positive ERP in the right posterior channels between 60 and 200 ms after presentation of the stem. The results, while confirming the PET findings, implicate involvement of right posterior cortex in bottom-up processing of primed stimuli. In addition to right posterior channels, the primed stems also had attenuated positivity in the right frontal channels after 250 ms of stem presentation, indicating reduced requirement for explicit recall process.
AB - A recent positron emission tomography (PET) study showed reduced blood flow in the right posterior cortex for primed words during a stem completion task, suggesting reduction in processing demand in this area for primed tasks. The time course of this attenuation was studied using event-related potentials (ERPs) in 40 normal subjects. As compared to the unprimed stems, primed stems elicited significantly less positive ERP in the right posterior channels between 60 and 200 ms after presentation of the stem. The results, while confirming the PET findings, implicate involvement of right posterior cortex in bottom-up processing of primed stimuli. In addition to right posterior channels, the primed stems also had attenuated positivity in the right frontal channels after 250 ms of stem presentation, indicating reduced requirement for explicit recall process.
KW - Event-related potential
KW - Implicit memory
KW - Parietotemporal cortex
KW - Priming
KW - Right frontal cortex
KW - Right posterior cortex
KW - Word stem completion
UR - http://www.scopus.com/inward/record.url?scp=0030466748&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030466748&partnerID=8YFLogxK
U2 - 10.1097/00001756-199611250-00035
DO - 10.1097/00001756-199611250-00035
M3 - Article
C2 - 9116222
AN - SCOPUS:0030466748
SN - 0959-4965
VL - 7
SP - 2975
EP - 2978
JO - Neuroreport
JF - Neuroreport
IS - 18
ER -