A frequency peak at 3.1 kHz obtained from the spectral analysis of the cochlear implant electrocochleography noise.

Introduction: The functional evaluation of auditory-nerve activity in spontaneous conditions has remained elusive in humans. In animals, the frequency analysis of the round-window electrical noise recorded by means of electrocochleography yields a frequency peak at around 900 to 1000 Hz, which has been proposed to reflect auditory-nerve spontaneous activity. Here, we studied the spectral components of the electrical noise obtained from cochlear implant electrocochleography in humans.

[Implementation of a virtual telehealth course for Chilean older adults and health students].

Background: Aging increases the vulnerability to diseases and environmental changes such as the COVID-19 pandemic. Telehealth and tele-education are vital to prevent the deleterious effects of prolonged confinement, and to train the community, and constantly rotating medical students and health professionals.

Aim: To assess the perception and impact of an online course about healthy aging aimed at the community and health care professionals.

Hearing loss in school-aged children.

Background: Hearing loss is a common disability affecting 5% of the world's population. A lack of opportune diagnosis affects both the individual and society. In order to develop public health policies in the field of hearing health, countries must have information about epidemiology.

Neural responses to sensory novelty with and without conscious access.

Detection of novel stimuli that violate statistical regularities in the sensory scene is of paramount importance for the survival of biological organisms. Event-related potentials, phasic increases in pupil size, and evoked changes in oscillatory power have been proposed as markers of sensory novelty detection. However, how conscious access to novelty modulates these different brain responses is not well understood.