Integración temporal de sonidos de amplitud modulada y su relación con la integración temporal en bajas frecuencias e infrasonidos.

In this research work the relation between temporal integration of the human ear for amplitude modulated stimulus and infrasound stimulus is evaluated. Four experiments were carried out, that made use of psychophysics methods, in order to analyze the detection threshold for AM tones at different modulation frequencies, and in order to determine the limit frequency at which subjects can perceive separate events. The results obtained for detection threshold have been compared with previous data on temporal integration for infrasounds, and limit frequencies have been found for AM and infrasound stimuli Finally, one last experiment has been implemented in order to find if there is a relation between auditory and visual temporal processing for the perception of separate events on modulated visual stimulus. The results reveal that detection threshold for AM and infrasound varies considerably for very low frequencies 4 Hz. The perception of separate events for AM tones of different carrier frequencies 12.9 Hz for 1000 Hz carrier and 11.2 Hz for 125 Hz carrier has been found to be very similar to that of the infrasound tones 14.8 Hz for pure tones. After analyzing results for visual stimulus, it has been found that perception of separate events differs from that of the auditory stimulus, nevertheless, there seems to exist a significant positive correlation between these values that suggests there may be a similar temporal process.

• Autore principale: Rosero López, David Andrés (author)
• Natura: bachelorThesis
• Lingua: spa
• Pubblicazione: 2020
• Soggetti: CONTROL DE RUIDO; SONIDO-MEDICIÓN; BAJA FRECUENCIA
• Accesso online: http://dspace.udla.edu.ec/handle/33000/12710