Social dynamics of AI adoption in parents' educational decisions.

Cochlear implant (CI) electrode arrays, typically comprising 12 to 22 individual contacts, are designed to selectively stimulate different regions of the cochlea and the vestibulocochlear nerve. This design takes advantage of the tonotopic organization of the cochlea, assigning high-frequency information to basal electrodes and low-frequency information to apical electrodes, which is essential for speech sound perception. Thus, activation of all fully inserted intracochlear electrodes aims to restore this critical tonotopic organization and promote effective stimulation of the auditory portion of the vestibulocochlear nerve. However, in clinical practice, electrical stimulation often excites broader regions than intended, resulting in overlapping neural excitation and increased electrode interaction. This phenomenon, known as channel interaction, has been associated with poorer speech perception outcomes in CI users. The electrode–neuron interface and the fidelity with which natural hearing is simulated depend on several factors, including the precise position of the electrode within the cochlea, its distance from the modiolus, and the integrity of cochlear nerve fibers. High levels of channel interaction may reduce spectral selectivity and limit the benefit provided by electrical stimulation. Programming strategies aimed at reducing channel interaction, including more focused stimulation and strategic selective deactivation of specific electrode channels, have shown potential to improve speech perception. Imaging techniques, such as high-resolution computed tomography, allow visualization of the relationship between the electrodes and the cochlea and may guide individualized programming strategies. However, these resources are not available in all centers and are not always sufficient to fully characterize the electrical behavior of an electrode over time or to assist in the diagnosis of electrode malfunction.