Table 1.

Comparison with previous reviews. (✓: Discussed, ✗: Not Discussed).

Reference	Research Area (FER)	Research Area (PER)	Region Methods	Vision Transformer Methods	Datasets
[9]	✓	✗	✗	✗	✓
[26]	✓	✗	✗	✗	✓
[27]	✓	✗	✗	✗	✓
[28]	✓	✗	✗	✗	✗
[29]	✓	✗	✗	✗	✓
[30]	✓	✓	✗	✗	✗
[31]	✓	✗	✓	✗	✗
[14]	✓	✗	✗	✗	✓
Current Review	✓	✓	✓	✓	✓