Verónica Alcalá-Herrera

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Acute injection of clomipramine or a 24-hour period of sleep deprivation produces an increased firing rate in lateral septal neurons of the rat. However, it is unknown whether changes in firing rate in lateral septal neurons also appear after repetitive treatments. This study explored and compared the effects of long-term clomipramine with those of sleep(More)
The present study was designed to explore whether changes occur in psychophysiological variables in healthy women not suffering from premenstrual tension. Variations in electroencephalogram frequencies, reaction time, somatosensory evoked potentials, and nerve conduction velocity were examined in a sample of 30 women, in relation to scores from the Hamilton(More)
Studies on neuronal firing have shown a decrease in frequency of firing in structures not directly related to emotional processes. However, studies of the hippocampus have shown increases in firing rate. Other limbic structures not yet explored in regard to the action of antidepressants include the septal nuclei. The present work describes a common effect(More)
A single dosage of several antidepressants produces an increased rate of firing in lateral septal nuclei of the rat. The objective of the present study was to clarify the long-term treatment action of clomipramine on the septal nuclei of the rat. A progressive increase of firing rate appeared after long-term treatment with clomipramine (1.25 mg/kg, IP;(More)
OBJECTIVE To investigate the relationships between menarcheal timing and both menarcheal experience and attitudes toward menstruation in Mexican girls. DESIGN Cross-sectional survey. SETTINGS Sample of adolescents attending 10 different public schools. PARTICIPANTS Mexican postmenarcheal adolescents, aged 11-16 years. INTERVENTION Participants(More)
STUDY OBJECTIVE To estimate the current age at menarche in 2 urban areas from Mexico and to analyze secular trends in the age at menarche in Mexico City. DESIGN Cross-sectional survey and secondary data analyses. SETTING (1) Samples of female students from Mexico City and from the city of Xalapa; and (2) national health surveys. PARTICIPANTS (1) Pre-(More)
Electroconvulsive shock is a common treatment used in depression, especially in cases in which suicide constitutes a risk. The recommendation for its use varies from one place to another, but there is an empirical agreement to avoid daily treatment or several treatments on the same day. The present study explored the actions of electroconvulsive shock in(More)
During the time around menarche, young women must make many emotional and social adjustments to adapt to a new life stage. We compared depressive symptomatology and coping strategies between early and average maturer Mexican adolescents girls. The relationships between elapsed time since menarche and both depressive symptomatology and coping strategies were(More)
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