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Patients with schizophrenia and bipolar disorder may display some left-lateralisation of the normal right-lateralised temporal lobe response to emotional prosody.

The vibrational distributions of the methyl fragment resulting from the photodissociation of CHzI at 248 nm are obtained by TOF photofragment spectroscopy. Only excitation of the v 2 (umbrella) mode is observed and the distribution peaks strongly at v = 2 for the electronically adiabatic pathway (I zP1/2) but extends up to v = 8 for the minor (~ 30 per cent) non-adiabatic pathway (12P3/~). Angular measurements show that both pathways result from an initial parallel ('~Q0 +-N) transition followed by a curve crossing to produce the ground state I fragment. The coupling of the curves is vibronic in nature and probably involves the v~ methyl rocking mode. The lifetime of the photodissociation is found to be ~ 1 x 10 -13 s.

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