Infant Emotional Mimicry of Strangers: Associations with Parent Emotional Mimicry, Parent-Infant Mutual Attention, and Parent Dispositional Affective Empathy.

Emotional mimicry, the tendency to automatically and spontaneously reproduce others' facial expressions, characterizes human social interactions from infancy onwards. Yet, little is known about the factors modulating its development in the first year of life. This study investigated infant emotional mimicry and its association with parent emotional mimicry, parent-infant mutual attention, and parent dispositional affective empathy.

Evidence for trans-cis isomerization of the p-coumaric acid chromophore as the photochemical basis of the photocycle of photoactive yellow protein.

Analysis of the chromophore p-coumaric acid, extracted from the ground state and the long-lived blue-shifted photocycle intermediate of photoactive yellow protein, shows that the chromophore is reversibly converted from the trans to the cis configuration, while progressing through the photocycle. The detection of the trans and cis isomers was carried out by high performance capillary zone electrophoresis and further substantiated by 1H NMR spectroscopy. The data presented here establish the photo-isomerization of the vinyl double bond in the chromophore as the photochemical basis for the photocycle of photoactive yellow protein, a eubacterial photosensory protein.

Effects of inhalation of beta 2-sympathicomimetic and anticholinergic agents on the impedance of the respiratory system in normal subjects.

Impedance measurement of the respiratory system by forced oscillations is a sensitive and accurate method to detect mechanical parameters, especially in normal subjects. The effects of inhalation of 0.2 mg of fenoterol and 0.

Relationship between tetramer-dimer assembly and the stability of Hb Malmö (alpha 2 beta 2 97Gln).

The effects of the mutation of the alpha 1 beta 2 contact in Hb Malmö (alpha 2 beta 2 97(FG4)His----Gln) on oxygen-binding properties, ease of dissociation into dimeric hemoglobin and stability were studied. The P50 value of Hb Malmö in the absence of organic phosphates was 1.9 mmHg, in contrast to 8.