RESUMEN
Ustilago, a common fungal parasite of grains, is infrequently isolated as a pathogen in humans. We describe a case of Ustilago echinata infection following an open distal tibia fracture, review the current literature of this genus as a cause of invasive fungal infection in humans, and discuss management issues.
Asunto(s)
Antifúngicos/uso terapéutico , Fracturas Abiertas/microbiología , Micosis/tratamiento farmacológico , Tibia/lesiones , Ustilago/efectos de los fármacos , Ustilago/aislamiento & purificación , Adulto , Secuencia de Bases , ADN de Hongos/genética , Humanos , Masculino , Artes Marciales , Pruebas de Sensibilidad Microbiana , Micosis/microbiología , Análisis de Secuencia de ADN , Tibia/microbiología , Ustilago/clasificación , Ustilago/genética , Adulto JovenRESUMEN
The effect of apparent spatial location on sequential streaming was investigated by manipulating interaural time differences (ITDs). The degree of obligatory stream segregation was inferred indirectly from the threshold for detecting a rhythmic irregularity in an otherwise isochronous sequence of interleaved "A" and "B" tones. Stimuli were bandpass-filtered harmonic complexes with a 100-Hz fundamental. The A and B tones had equal but opposite ITDs of 0, 0.25, 0.5, 1, or 2 ms and had the same or different passbands. The passband ranges were 1250-2500 Hz and 1768-3536 Hz in experiment 1, and 353-707 Hz and 500-1000 Hz in experiment 2. In both experiments, increases in ITD led to increases in threshold, mainly when the passbands of A and B were the same. The effects were largest for ITDs above 0.5 ms, for which rhythmic irregularities in the timing of the A or B tones alone may have disrupted performance. It is concluded that the differences in apparent spatial location produced by ITD have only weak effects on obligatory streaming.