Sircar S S
Department of Physiology, University College of Medical Sciences & GTB Hospital, Delhi, India.
Med Hypotheses. 2000 Jun;54(6):913-6. doi: 10.1054/mehy.1999.0979.
A hypothesis is proposed here to reconcile the inconsistencies observed in the IQ-P3 latency relation. The hypothesis stems from the observation that task-induced increase in P3 latency correlates positively with IQ scores. It is hypothesised that: (a) there are several parallel information processing pathways of varying complexity which are associated with the generation of P3 waves of varying latencies; (b) with increasing workload, there is a shift in the 'information processing level' through progressive recruitment of more complex polysynaptic pathways with greater processing power and inhibition of the oligosynaptic pathways; (c) high-IQ subjects have a greater reserve of higher level processing pathways; (d) a given 'task-load' imposes a greater 'mental workload' in subjects with lower IQ than in those with higher IQ. According to this hypothesis, a meaningful comparison of the P3 correlates of IQ is possible only when the information processing level is pushed to its limits.
本文提出了一个假设，以调和在智商与P3潜伏期关系中观察到的不一致性。该假设源于这样的观察，即任务诱导的P3潜伏期增加与智商分数呈正相关。假设如下：(a) 存在几条不同复杂程度的并行信息处理通路，它们与不同潜伏期的P3波的产生有关；(b) 随着工作量的增加，“信息处理水平”会发生转变，即通过逐步招募处理能力更强的更复杂的多突触通路并抑制少突触通路来实现；(c) 高智商受试者拥有更多的高级处理通路储备；(d) 给定的“任务负荷”对低智商受试者造成的“心理工作量”比对高智商受试者更大。根据这一假设，只有当信息处理水平被推到极限时，才有可能对智商与P3的相关性进行有意义的比较。
