A scoping review on the use of consumer-grade EEG devices for research examines the application of affordable, user-friendly EEG devices in various research domains. The study identified 916 studies using consumer-grade EEG, with Emotiv devices being the most commonly used. These devices are used for brain-computer interfaces (BCI), experimental research, signal processing, validation, and clinical purposes. The review highlights the versatility of consumer-grade EEG in fields such as BCI, cognitive neuroscience, engineering, and clinical applications. It also notes the growing use of these devices in non-traditional research settings and their potential for future research. The study emphasizes the importance of validating these devices in different contexts and suggests that further research is needed to explore their capabilities in various experimental paradigms. The review also discusses the challenges associated with using consumer-grade EEG, including signal noise and the need for proper data processing. Overall, the study concludes that consumer-grade EEG is a valuable tool for neuroscientific research and has significant potential for future applications.A scoping review on the use of consumer-grade EEG devices for research examines the application of affordable, user-friendly EEG devices in various research domains. The study identified 916 studies using consumer-grade EEG, with Emotiv devices being the most commonly used. These devices are used for brain-computer interfaces (BCI), experimental research, signal processing, validation, and clinical purposes. The review highlights the versatility of consumer-grade EEG in fields such as BCI, cognitive neuroscience, engineering, and clinical applications. It also notes the growing use of these devices in non-traditional research settings and their potential for future research. The study emphasizes the importance of validating these devices in different contexts and suggests that further research is needed to explore their capabilities in various experimental paradigms. The review also discusses the challenges associated with using consumer-grade EEG, including signal noise and the need for proper data processing. Overall, the study concludes that consumer-grade EEG is a valuable tool for neuroscientific research and has significant potential for future applications.