Table 1 Eligibility criteria

Population

Studies having participants diagnosed with Alzheimer’s disease or its prodromal stages, i.e., mild cognitive impairment.

Participants of both gender and age range of 55to 90 years

Studies using animal models of Alzheimer’s disease.

Studies including individuals with cognitive decline derived from other diseases/conditions (e.g., stroke, ischemia, Parkinson’s disease)

Intervention

Auditory-based intervention or stimulation (both active and passive) either alone or combined with other sensory/noninvasive/behavioral intervention techniques.

Studies including other (nonauditory) sensory stimuli as a standalone treatment.

Outcome

Outcome measures related to cognitive function/neurophysiological changes using Electroencephalogram (EEG)/improvements in Auditory skills.

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Study design

Study designs include experimental, quasi-experimental, or observational studies in English, encompassing crossover studies, longitudinal studies, randomized and nonrandomized clinical trials, pre- and post-experimental studies, case‒control studies, cohort studies, and case series.

Reviews, protocols, conference papers, proceedings papers, editorials, and surveys