Cognitive Neuroscience of human social behaviour

January 10, 2017


Www.frontiersin.org

Investigations of the neural basis of judging trustworthiness have yielded convergent results from functional imaging studies in normal people, and from lesion studies in neurological patients. a | Evidence from lesion studies. Bilateral damage to the amygdala selectively impairs the ability to judge untrustworthiness of faces. These data, from three patients (JM, SM and RH), show that the amygdala is not only involved when we normally make social judgements, but that amygdala dysfunction precludes normal social judgement. This does not mean that the amygdala is sufficient for judging trustworthiness, but that it is necessary. Bilat., bilateral amygdala damage (n = 3); Control, brain-damaged controls with no damage to the amygdala (n = 10, standard error shown); Left, unilateral left amygdala damage (n = 3); Normal, neurologically normal controls (n = 46), standard deviation shown; Right, unilateral right amygdala damage (n = 4). The lower panels show individual scores from the three patients and the mean rating given by normal subjects. Modified, with permission, from Nature Ref. 58 © (1998) Macmillan Magazines Ltd. b | Evidence from functional imaging. The top image shows the activation in the amygdala observed when viewing untrustworthy faces is contrasted with viewing trustworthy faces. The z-values (colour scale) observed in the amygdala correspond to p

Source: www.nature.com

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