Brain response to fear. Coloured positron emission tomography (PET) scan of a transverse section through a human brain,showing response to fear. The active brain region colour-coded yellow/red is the left amygdala (at upper centre left). Subjects in this study viewed a series of photographs of a man's face depicting increasing stages of fearful expression (see photo M245/349). With increased fearful expression the amygdala response increases suggesting it is this part of the brain that recognises and responds to facial fear. PET scanning detects blood flow & metabolic activity; here the background brain is an MRI image | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wellcome Dept. of Cognitive Neurology |
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