A differential neural response in the human amygdala to fearful and happy facial expressions
Direct in vivo evidence of a differential neural response in the human amygdala to facial expressions of fear and happiness is reported, providing direct evidence that the humangdala is engaged in processing the emotional salience of faces, with a specificity of response to fearful facial expressions.
Functional Connectivity: The Principal-Component Analysis of Large (PET) Data Sets
- Karl J. Friston, C. Frith, P. Liddle, R. Frackowiak
- PsychologyJournal of Cerebral Blood Flow and Metabolism
- 1 January 1993
The results suggest that the variance in neurophysiological measurements, introduced experimentally, was accounted for by two independent principal components and highlighted an intentional brain system seen in previous studies of verbal fluency.
A neuromodulatory role for the human amygdala in processing emotional facial expressions.
- J. Morris, Karl J. Friston, R. Dolan
- Biology, PsychologyBrain : a journal of neurology
- 1998
Functional neuroimaging confirmed that the amygdala and some of its functionally connected structures mediate specific neural responses to fearful expressions and demonstrated that amygdalar responses predict expression-specific neural activity in extrastriate cortex.
Comparing Functional (PET) Images: The Assessment of Significant Change
- Karl J. Friston, C. Frith, P. Liddle, R. Frackowiak
- MathematicsJournal of Cerebral Blood Flow and Metabolism
- 1 July 1991
This report describes an approach that may partially resolve the uncertainty in assessing the significance of statistical parametric maps and models the SPM as a stationary stochastic process.
Dyslexia: Cultural Diversity and Biological Unity
- E. Paulesu, J. Démonet, U. Frith
- PsychologyScience
- 16 March 2001
It is concluded that there is a universal neurocognitive basis for dyslexia and that differences in reading performance among dyslexics of different countries are due to different orthographies.
Characterizing Evoked Hemodynamics with fMRI
- Karl J. Friston, C. Frith, R. Turner, R. Frackowiak
- Psychology, BiologyNeuroImage
- 1 June 1995
Using this approach, the anterior cingulate differentiates, in terms of its response, between two motor tasks that did and did not require sustained attention, and it is suggested that these demonstration results point to the possibility of making greater use of the temporal resolution afforded by fast fMRI techniques.
Dissociable neural responses to facial expressions of sadness and anger.
- R. Blair, J. Morris, C. Frith, D. Perrett, R. Dolan
- Psychology, BiologyBrain : a journal of neurology
- 1 May 1999
Functional neuroimaging results provide evidence for dissociable, but interlocking, systems for the processing of distinct categories of negative facial expression.
Investigations of the functional anatomy of attention using the stroop test
- C. Bench, C. Frith, P. Grasby, Karl J. Friston, R. Dolan
- Psychology, BiologyNeuropsychologia
- 1 September 1993
Dissociable functions in the medial and lateral orbitofrontal cortex: evidence from human neuroimaging studies.
- R. Elliott, R. Dolan, C. Frith
- Psychology, BiologyCerebral Cortex
- 1 March 2000
It is suggested that selection of stimuli on the based of their familiarity and responses on the basis of a feeling of 'rightness' are also examples of selection on theBased of reward value, the lateral regions are more likely to be involved when the action selected requires the suppression of previously rewarded responses.
Characterizing Dynamic Brain Responses with fMRI: A Multivariate Approach
- Karl J. Friston, C. Frith, R. Frackowiak, R. Turner
- Biology, PsychologyNeuroImage
- 1 June 1995
A multivariate analysis of evoked hemodynamic responses and their spatiotemporal dynamics as measured with fast fMRI reveals some compelling and somewhat unexpected perspectives on transient but stereotyped responses to changes in cognitive or sensorimotor processing.
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