882 resultados para Multimodal transport planning and integration


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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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There is controversy over how hormonal conditions influence cerebral physiology. We studied pattern-shift visual evoked potentials (PS-VEP), brain stem auditory evoked potentials (BAEP) and short-latency somatosensory evoked potentials (SSEV) in 20 female volunteers at different phases of the menstrual cycle (estrogen phase, ovulatory day and progesterone phase). Statistical analysis showed decreased latencies for P 100 (PS-VEP), N 19and P 22 (SSEV) waves in the progesterone phase compared with the estrogen phase. There was no significant difference between the estrogen and the ovulation day values. Comparing the three above stages, there were no significant differences in the brainstem auditory evoked potentials. The reduction of the latencies of the potentials generated in multisynaptic circuits provides the first consistent neurophysiological basis for a tentative comprehension of human pre-menstrual syndrome.

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Includes Bibliography

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Sostiene que la necesidad de establecer un justo equilibrio entre mercado y acción estatal, sobre la base de un diagnóstico objetivo de las virtudes y deficiencias de uno y la otra, constituye una de las grandes lecciones de la experiencia económica de la posguerra para el futuro de las relaciones entre planificación y mercado.

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