Blink reflex: comparison of latency measurements in different human races

Arquivos de Neuro-Psiquiatria

Paulo Andre Teixeira Kimaid²  Luiz Antonio Lima Resende²  Heloisa Amélia De Lima Castro¹  Fausto Bérzin¹  Amilton Antunes Barreira¹ 

[1] ,Universidade Estadual Paulista Faculdade de Medicina de Botucatu Department of NeurologyBotucatu SP ,Brazil

关键词: blink reflex;    races;    reflexo trigêmino-facial;    raças;   

DOI  :  10.1590/S0004-282X2002000400009

来源: SciELO

【 摘 要 】

The blink reflex latencies and cephalometric indexes were analysed in 30 male volunteers from three different races, 10 white, 10 black, and 10 Oriental. Ages ranged from 15 to 59 years, height from 1,60 to 1,80 m, and weight from 60 to 80 kg. Blink reflexes were obtained after unilateral electric stimulation of the supraorbital nerve for quantitative analysis of 3 responses, early ipsilateral (R1), late ipsilateral (R2i) and late contralateral (R2c), obtained from the orbicularis oculi muscle. Cephalometric indexes were calculated by multiplying the ratio between the longer transverse and the longer sagital head diameters by 100. The R1, R2i and R2c latencies were consistent with other published papers revealing no differences between the different racial groups. The mean of the cephalometric indexes of each group were consistent with respective racial characteristics. This study revealed that there are no differences between R1, R2i and R2c latencies in the 3 different studied races.

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