Grammatical Analysis
Bhavaṅga: [nt.] life-continuum; factor of existence; subconscious life-stream. Formed by bhava (existence, becoming) + aṅga (factor, limb, cause). Meaning: the underlying mental factor that sustains existence.
Orthodox Definition
Bhavaṅga is one of the most unique and critical discoveries of Theravāda Abhidhamma psychology. It is the baseline, passive resultant consciousness (vipāka-citta) that flows continuously like a subterranean river whenever active cognitive processes (like seeing, hearing, or thinking) are not occurring.
The bhavaṅga is identical in ethical quality and object to the rebirth-linking consciousness (paṭisandhi-citta) of that specific lifetime. It is the state the mind drops into during deep, dreamless sleep.
When a sensory object (like a sound) strikes the ear, the bhavaṅga stream vibrates and arrests (bhavaṅga-upaccheda), allowing an active cognitive series (citta-vīthi) to rise up, process the sound, generate wholesome or unwholesome kamma, and then immediately sink back into the passive bhavaṅga state. It bridges the gaps between active thoughts, ensuring the mind-stream never breaks during a lifetime.
Textual References
- Abhidhamma: Paṭṭhāna – Establishing the functional conditions of the life-continuum.
- Textual: Abhidhammattha-saṅgaha (Chapter IV: Vīthi-saṅgaha) – The absolute standard manual detailing how many exact mind-moments the bhavaṅga vibrates before active cognition begins.
- Commentary: Visuddhimagga (Chapter XIV) – Defining its function as the preserver of the continuity of a single lifetime.