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功能核磁共振成像(f MRI)的研究已经发现,人类梭状回包含专门加工面孔的区域,通常被称为梭状回面孔区(FFA).然而,仅依靠f MRI技术本身不能直接说明FFA与面孔加工间存在因果关系.结合f MRI、颅内电极记录、电刺激技术可直接为二者的因果关系提供重要的证据.本研究借助一例难得的颅内置入电极恰好与左侧FFA重叠的癫痫病例系统地考察了左侧FFA的功能属性.当前研究结果显示,左侧FFA的血氧水平依赖反应和电生理反应都表现出较强的面孔选择性;电刺激与左侧FFA重叠的电极不影响真人面孔知觉;电刺激左侧FFA引起面孔形状感知变化.本研究揭示了左侧FFA在面孔精细特征的加工中起着重要的作用,它在功能上可能区别于右侧对应区域.
Functional MRI (f MRI) studies have found that human fusiform gyrus contains specially machined faces that are often referred to as fusiform backfacing regions (FFA). However, the f MRI alone does not directly address FFA and There is a causal relationship between the surface processing.Combined with f MRI, intracranial electrode recording, electrical stimulation technology can directly provide the causation of the two important evidence that this study with a rare intracranial electrode superimposed just overlap with left FFA epilepsy The patients systematically investigated the functional properties of the left FFA.The current results show that the left FFA blood oxygenation-dependent and electrophysiological reactions showed a strong face selectivity; electrical stimulation and left FFA overlapping electrode is not Affecting the perception of the human face.Electrically stimulated changes in the shape of the face caused by the left FFA.The study revealed that the left FFA plays an important role in the processing of the fine features of the face and may be functionally different from the corresponding region on the right.