TY  - GEN
A1  - Ribes, Pablo
A1  - Ventura-Bort, Carlos
A1  - Poy, Rosario
A1  - Segarra, Pilar
A1  - Rodriguez, Sara
A1  - Branchadell, Victoria
A1  - Molto, Javier
T1  - N2 and P3 modulation in a modified go/nogo task
BT  - the role of disinhibition (Poster)
T2  - Psychophysiology : journal of the Society for Psychophysiological Research
N2  - This study examined the relationships between the three phenotypic domains of the triarchic model of psychopathy —boldness, meanness, disinhibition— and electrophysiological  indices  of  inhibitory  control  (NoGo-N2/NoGo-P3).  EEG  data  from  a  256-channel  dense  array  were  recorded  while  participants  (135  un-dergraduates assessed via the Triarchic Psychopathy Measure) performed a Go/NoGo  task  with  three  types  of  stimuli  (60%  frequent-Go,  20%  infrequent-Go,  20% infrequent-NoGo). N2 was defined as the mean amplitude between 240 ms and 340 ms after stimuli onset over fronto-central sensors on correct trials; P300 was defined as the mean amplitude between 350 ms and 550 ms after stimuli onset over centro-parietal sensors on correct trials. Multiple regression analyses using gender-corrected  triarchic  scores  as  predictors  revealed  that  only  Disinhibition  scores  significantly  predicted  reduced  NoGo-N2  amplitudes  (3.5%  explained  variance,  beta  weight  =  .23,  p  <  .05)  and  reduced  P3  amplitudes  for  NoGo  and  infrequent-Go trials (3.1 and 3.2% explained variance, respectively, beta weights =  -.21, ps  <  .05).  Our  results  indicate  that  high  disinhibition  entails  deviations  in  early  conflict  monitoring  processes  (reduced  NoGo-N2),  as  well  as  in  latter  evaluative and updating processing stages of infrequent events (reduced NoGo-P3 and infrequent-Go-P3). The null contribution of meanness and boldness domains in these results suggests that N2 and P3 amplitudes in Go/NoGo tasks could be considered as neurobiological indices of the externalizing tendencies comprised in this personality disorder.
KW  - N2/P3
KW  - Inhibitory Control
KW  - Triarchic Model of Psychopathy
Y1  - 2018
SN  - 0048-5772
SN  - 1469-8986
VL  - 55
SP  - S91
EP  - S91
PB  - Wiley
CY  - Hoboken
ER  -