On Vrittis through Yoga Sutra for Inner Work by Rithambara Ashram
The activities or movements (of the citta) are of 5 types. They either lead to or away from suffering.
vRttayaH activities, movements, transactions through the instruments of consciousness, citta vyApAram
pancatayyaH five types
kliShTA residue, reaction. That which afflicts, causes pain and suffering. kliShnAti iti kliShTaH
akliShTAH no residue, no reaction
There are five activities of the mind and these are capable of generating disturbances, pain/problems and residues or not. These are either kliShTa or akliShTa vRtti. kliShnAti iti kliShTA means it creates suffering, creates some kind of constriction, pain, sorrow, or residue. The processes of perception sometimes lead to correct decisions i.e., there are no residues and the action goes with the flow of life. The process can also oppose the flow of life resulting in sorrow/ pain/ residue in the mind.
These 5 types of activities are comprehension, misapprehension, imagination, sleep and recall.
pramANa Measure, testimony, evidence, proof (comprehension), pramA karaNam
viparyaya The opposite, reverse, inversion (misapprehension), viruddham eti vyApnoti
vikalpa Imagination fit or adequate for, vividham kalpayate iti
nidrA Sleep, nitarAm drAti iti
smRtayaH Memory, recall, smR cintAyAm