What is “perception”? For Buddhist epistemologists, it includes:

1. sense-perception (indriyapratyakṣa)
2. yogic perception
3. self-awareness of cognitions (svasaṃvedana)
4. mānasapratyakṣa (used to access immediately preceding cognitive events)

For Nyāya epistemologists, it includes:

1. sense-perception (indriyapratyakṣa)
2. yogic perception
3. mānasapratyakṣa (used to access immediately preceding cognitive events) (including anuvyavasāya)

svasaṃvedana is refused, because cognitions are not transparent. Instead, they are perceptible through anuvyavasāya, which is a form of mānasapratyakṣa.

For Mīmāṃsā epistemologists, it includes:

1. sense-perception (indriyapratyakṣa)

Please notice that sense-perception includes, for all Sanskrit philosophers I am aware of, six senses, one of which is manas, which is meant to grasp internal events, typically sukha or duḥkha.

Now, where does Kumārila’s ahampratyaya ‘cognition of the I’ fall into? It cannot be a case of mānasapratyakṣa, because this one is not accepted as a separate way to accept cognitive events (for thorough refutations of it from a Mīmāṃsā point of view, one can check Śālikanātha’s Pramāṇapārāyaṇa, pratyakṣapariccheda or Vācaspati’s Nyāyakaṇikā, on VV chapter 8). It could be a case of indriyapratyakṣa, with the manas working as the sense faculty, but this is odd, given that manas as a sense faculty should grasp a sensory object, like sukha or duḥkha and it is unclear how the aham could qualify as one.