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Neural mechanisms of empathy in humans: A relay from neural systems for imitation to limbic areas
- L. Carr, M. Iacoboni, Marie-Charlotte Dubeau, J. Mazziotta, G. Lenzi
- Psychology, BiologyProceedings of the National Academy of Sciences…
- 7 April 2003
There was greater activity during imitation, compared with observation of emotions, in premotor areas including the inferior frontal cortex, as well as in the superior temporal cortex, insula, and amygdala, which may be a critical relay from action representation to emotion.
Neural basis of maternal communication and emotional expression processing during infant preverbal stage.
It is found that the mirror neuron system, the insula and amygdala were more active during emotional expressions, that this circuit is engaged to a greater extent when interacting with one's own child, and that it is correlated with maternal reflective function (a measure of empathy).
Frontal lobe dysfunction in essential tremor: a preliminary study.
Despite the nosographic independence of the two conditions, data showed that the frontal lobe feature of ET was similar to those of PD, thus possibly suggesting a common dysregulation of dopamine pathways.
Cerebral Oxygen Metabolism and Blood Flow in Human Cerebral Ischemic Infarction
- G. Lenzi, R. Frackowiak, T. Jones
- MedicineJournal of cerebral blood flow and metabolism…
- 1 September 1982
This study demonstrates that in the completed stroke there are thresholds for regional CMRO2 and regional CBF below which the general clinical outcome of the patients is usually poor, and underline the high variability of metabolism-to-flow balance during the acute phase of the illness.
Cortical motor reorganization after a single clinical attack of multiple sclerosis.
This study shows functional adaptive changes that involve both the symptomatic and asymptomatic hemisphere during a simple motor task in patients who had suffered a single clinical attack of hemiparesis that increased with the time elapsed since disease onset and the severity of brain damage.
A longitudinal study of MR diffusion changes in normal appearing white matter of patients with early multiple sclerosis.
Effect of Side and Rate of Stimulation on Cerebral Blood Flow Changes in Motor Areas during Finger Movements in Humans
- U. Sabatini, F. Chollet, J. Marc-Vergnes
- Biology, PsychologyJournal of cerebral blood flow and metabolism…
- 1 July 1993
It is demonstrated that hand dominance evokes no differences in the activation of the main motor areas and that the frequency and amplitude of the movement have a major effect on the quantitative and qualitative aspect of activation of motor areas in humans.
Comparison of cerebral angiography and transcranial Doppler sonography in acute stroke.
Higher flow velocities in the anterior cerebral artery or posterior cerebral artery, mostly in the symptomatic hemisphere, often accompanied middle cerebral artery pathology, probably indicating collateral compensatory pathways.
Selective Activation of peripheral nerve fibre groups of different diameter by triangular shaped stimulus pulses.
The differential block of cutaneous nerve fibres has been achieved with a simple method of electrical stimulation, employing a single pair of active electrodes, and has the advantage over the conventional polarization block of simpler surgical preparation, longer nerve survival and minimal latency distortion.
Functional Basis of Memory Impairment in Multiple Sclerosis: A [18F]FDG PET Study
The findings indicate that hypometabolism of thalamic and deep cortical gray structures of the temporal lobe is associated with episodic memory dysfunction in MS and pathological performance on tests designed to assess frontal functions was associated with widespread reduction of glucose metabolism.