YEARS	MILESTONE IN BCI
1960s and 1970s	Development of invasive methods for BCIs that could detect brain signals and control simple tasks, e.g., moving a mouse cursor.
1980s and 1990s	Development of non-invasive techniques for BCI such as EEG.
2000s	Development of BCI used for restoring motor function of paralyzed or physically challenged individuals, e.g., using BCIs to control robotic arms.
Recent years	Development of BCIs for cognitive enhancement such as improving memory or cognitive processing speed.