RESUMEN
OBJECTIVE: Children with auditory processing disorder, as well as older adults with and without hearing loss, often report difficulty understanding speech in the presence of noise. There is evidence that deficient temporal resolution contributes to this difficulty. The purpose of this study was to establish within-channel (WC) and across-channel (AC) gap detection thresholds (GDTs) for participants ages 7 to 84 years. DESIGN: GDTs were measured using narrow-band noise markers for two conditions of the Adaptive Tests of Temporal Resolution (ATTR): WC and AC. STUDY SAMPLE: Participants were 29 children (ages 7-12 years) with normal hearing, 30 younger adults (ages 22-41 years) with normal hearing, and 60 older adults (ages 50 to 84 years) with varying hearing sensitivity. RESULTS: GDTs are smallest and least variable for younger adults with normal hearing and are largest and most variable for the youngest children (ages 7-8 years). The GDTs of the other groups fell between those of the younger adults and youngest children. Group differences were more apparent for AC than WC conditions. CONCLUSIONS: WC and AC gap detection ability changes across the lifespan. The ATTR is an efficient tool for the assessment of temporal resolution at both ends of the lifespan.
Asunto(s)
Envejecimiento/psicología , Pérdida Auditiva Sensorineural/diagnóstico , Ruido/efectos adversos , Enmascaramiento Perceptual , Psicoacústica , Percepción del Habla , Percepción del Tiempo , Estimulación Acústica , Adaptación Psicológica , Adulto , Factores de Edad , Anciano , Anciano de 80 o más Años , Audiometría de Tonos Puros , Umbral Auditivo , Niño , Comprensión , Señales (Psicología) , Pruebas de Audición Dicótica , Pérdida Auditiva Sensorineural/psicología , Humanos , Persona de Mediana Edad , Inteligibilidad del Habla , Factores de Tiempo , Adulto JovenRESUMEN
Effects of magnesium (Mg) supplementation on nine mild type 2 diabetic patients with stable glycemic control were investigated. Water from a salt lake with a high natural Mg content (7.1%) (MAG21) was used for supplementation after dilution with distilled water to 100mg/100mL; 300mL/day was given for 30 days. Fasting serum immunoreactive insulin level decreased significantly, as did HOMA squareR (both p < 0.05). There was also a marked decrease of the mean triglyceride level after supplementation. The patients with hypertension showed significant reduction of systolic (p < 0.01), diastolic (p = 0.0038), and mean (p < 0.01) blood pressure. The salt lake water supplement, MAG21, exerted clinical benefit as a Mg supplement in patients with mild type 2 diabetes mellitus.
