Patañjali's Yogasūtra I.6

Yogasūtra of Patañjali | Viniyoga with Dr Kausthub Desikachar

Dr. Kausthub Desikachar is the current lineage holder of the Viniyoga® tradition worldwide. He succeeds his father TKV Desikachar, and his grandfather T Krishnamacharya. His objectives include the sharing of the authentic teachings of Yoga to the modern era, as well as building bridges between different healing modalities to promote physical, emotional social and spiritual health.

I.6 - pramāṇa-viparyaya-vikalpa-nidrā-smṛtayaḥ

[The five mental activities are] correct comprehension, misapprehension, imagination, deep sleep and memory.

Each mental activity has its own characteristics and although not always apparent, these can be individually recognized. Their dominance and effects on our behaviour and attitudes combine to make up our personalities.