Westhofen M, Herberhold C
Acta Otorhinolaryngol Belg. 1987;41(1):66-71.
In normal subjects olfactory evoked cortical potentials are seen with latencies of 150 m/sec and 350 m/sec. To evaluate the site of potential generators in central nervous pathways olfactory evoked cortical potentials were registered in patients with well-defined lesions of the central nervous system and the maxillary nerve. Absence of the first potential was seen in lesions of the brain-stem and the maxillary nerve. Absence of the second potential was observed in lesions of the frontal cerebral medulla and the temporal cortex. No olfactory potentials were found in circumscribed lesions of the postcentral cortex. Sites of the lesions were controlled by computed tomography. Appearance of the two potentials is correlated to normal perception of smell which is established by combined olfactory and trigeminal nerve function.
在正常受试者中，可观察到潜伏期为150毫秒和350毫秒的嗅觉诱发皮质电位。为了评估中枢神经通路中电位发生器的位置，对中枢神经系统和上颌神经有明确病变的患者记录了嗅觉诱发皮质电位。在脑干和上颌神经病变中可观察到第一个电位消失。在额叶髓质和颞叶皮质病变中观察到第二个电位消失。在中央后回皮质的局限性病变中未发现嗅觉电位。病变部位通过计算机断层扫描进行对照。这两种电位的出现与由嗅觉和三叉神经功能共同建立的正常嗅觉感知相关。
