Centered Oscillators
Centered Oscillators are leading indicators that oscillate above and below a midpoint and typically don't have an upper or lower limit. Because there is no range limit and these unbounded indicators can technically go as high or as low as they want, overbought and oversold conditions are not easy to find, though extreme readings are used in some strategies. These technical analysis tools each have a different internal logic and most (though not all) are used to gauge the strength or weakness of momentum.
Source:tradingview.com