citta - Abhidhamma.com

Ṭhāna - working placeṬhāna is defined by the position of a citta in the various types ofvīthi (mental process): Five-door process or mind-door process anddependent on the size or intensity of the object.Five-door mental processes:Very large objectB...B P C Sp St V J J J J J J J T TLarge objectB.......B P C Sp St V J J J J J J J (B)Small objectB.................B P C Sp St V...V B...BVery small objectB...............................BMind-door processes:Clear objectB...B M J J J J J J J T TNot clear objectB...B M J J J J J J JB = bhavaṅgaP = PañcadvārāvajjanaC = Cakkhu-viññāṇa (or other dvipañca-viññāṇa)Sp = SampaṭicchanaSt = SantīraṇaV = VoṭṭhappanaJ = JavanaT = Tadārammaṇa38