Intelligence and the effects of perceptual processing demands, task difficulty and processing speed on P300, reaction time and movement time

Impulsivity, intelligence and P300 wave: An empirical study

“…Although the relationship between impulsivity and P300 amplitude was repeatedly observed in previous research, to the best of our knowledge no published study has analyzed this relationship controlling for individual differences in mental ability. With regard to this issue, a relevant result of the present study is that the P300-Impulsivity relationship is weakened when controlling for FSIQ, the latter being positively correlated with P300 amplitude, a result which is in agreement with previous findings (Bazana and Stelmack, 2002;Houlihan et al, 1998;De Pascalis et al, in press). In accordance with the "inhibition hypothesis" described above, it can be argued that the reduced P300 amplitude, observed in impulsive individuals, reflects a less efficient inhibitory mechanism of task-irrelevant information which could be responsible for the reduced cognitive performance observed for these individuals during the intelligence testing.…”

An assessment of working memory using P300 wave in healthy subjects

“…The amplitude of the P300 measured at traditional posterior sites normally reduces as the task becomes more complex [10,11]. More complex task requirements distract attention across more subprocesses than does a simpler task [12].…”

Updating P300: An integrative theory of P3a and P3b

“…The neuropsychological tests that produce the strongest correlation between P300 latency and cognitive capability assess how rapidly subjects can allocate attentional resources (Houlihan et al, 1998;Pelosi et al, 1992b;Reinvang, 1999). P300 latency decreases as children develop (Howard and Polich, 1985;Polich et al, 1990a) and increases with normal aging (Fjell and Walhovd, 2001;Polich, 1996).…”