Processing of Emotions

I would like to ask a question about the psychology of emotions in Buddhism. I am aware, from reading books on this topic, that emotions are complex phenomena distinct from *vedana*, or feelings. But what exactly are they? And how does one process such emotions? Similarly, I wonder which method is most conducive to either processing an existing emotion, or release and allow unfelt (repressed/suppressed) emotions to arise. I am particularly curious about the relationship of these meditative techniques towards emotions: (1) breathing meditation (2) visualization (3) body awareness (4) reappraising/re-framing cognitively. Lastly, I wonder whether it would be more beneficial to focus on feelings (vedana) or emotions themselves as an emphasis. Thank you for any response.