Samadhi Pada Sutra 6
Samadhi Pada Sutra 6pramana: valid knowledge, experienced knowledge, correct knowledge, which is studied and verified, proof, or evidence
viparyaya: inverted, perverse, contrary
vikalpa: doubt, indecision, hesitation, fancy, imagination, or daydreaming
nidra: sleep, a state of emptiness
smrtayah: memory
pramana viparyaya vikalpa nidra smrtayah
They are caused by correct knowledge, illusion, delusion, sleep, & memory (BKS Iyengar)
The 5 activities are comprehension, misapprehension, imagination, deep sleep, and memory (Desikachar)
[Summarized:] The five categories of apparent mvmts of mind are: proven theory, unsound thinking or wrong knowledge, fancey or hallucination or imagination, a state of dullness or sleep, memory. (Venkatesananda)