Tan U, Akgün A, Komsuoglu S, Telatar M
Atatürk University, Medical Faculty, Department of Physiology, Erzurum, Turkey.
Int J Neurosci. 1993 Jul-Aug;71(1-4):189-200. doi: 10.3109/00207459309000604.
The relationships between latencies of visual evoked potentials (VEPs) and nonverbal intelligence test scores (IQs from Cattell's Culture Fair Intelligence Test) and correlations between serum testosterone level and VEP latencies were studied to examine the neural speed hypothesis of intelligence and its hormonal mechanisms in left-handed male subjects (Geschwind Scores). In accordance with the speed theory of intelligence, N1 and P1 latencies (and amplitudes) were found to be inversely related to IQ. However, this was true only for the right brain; the left brain did not contribute to this relationship. There was an inverse relationship between serum testosterone level and P1 latency; left minus right N1 latency, depending on N1 latency from right brain, linearly increased with testosterone. It was concluded that nonverbal intelligence largely depends on speed of information processing only by the right brain, not by the left brain in left-handed male subjects. This may have been created by testosterone in these subjects. Inconsistencies in the IQ literature concerning the speed hypothesis of intelligence may be explained by differences in cerebral lateralization.
研究了视觉诱发电位（VEP）潜伏期与非言语智力测试分数（卡特尔文化公平智力测试的智商）之间的关系，以及血清睾酮水平与VEP潜伏期之间的相关性，以检验智力的神经速度假说及其在左利手男性受试者（ Geschwind评分）中的激素机制。根据智力的速度理论，发现N1和P1潜伏期（以及波幅）与智商呈负相关。然而，这仅在右脑成立；左脑与这种关系无关。血清睾酮水平与P1潜伏期呈负相关；左脑减去右脑的N1潜伏期，取决于右脑的N1潜伏期，随睾酮水平呈线性增加。得出的结论是，在左利手男性受试者中，非言语智力在很大程度上仅取决于右脑而非左脑的信息处理速度。这可能是由这些受试者体内的睾酮造成的。智力速度假说在智商文献中的不一致之处可能是由大脑侧化的差异所解释的。
