Affect is the body’s ongoing felt evaluation of its situation — a continuous, pre-reflective process that colors all experience. It is not the same as emotion. Emotions are discrete, named states (anger, sadness, joy) that emerge when affect is processed through cognitive appraisal and cultural categories. Affect is more basic: the felt sense of whether things are going well or badly, whether the current situation requires approach or withdrawal, whether the organism is safe or threatened.
Affect has two primary dimensions: valence (pleasant to unpleasant) and arousal (calm to activated). Any affective state can be located on these two axes. Anxiety is high arousal, negative valence. Contentment is low arousal, positive valence. Excitement is high arousal, positive valence. Depression is low arousal, negative valence.
The sensory basis of affect is interoception — the sense of the body’s internal state. The insular cortex integrates signals from the viscera (heart rate, gut state, breathing, muscle tension) into a felt sense that constitutes the body’s affective commentary on its situation. This is why affect is not purely psychological: it is a bodily process, mediated by the autonomic nervous system, expressed in physiological changes, and accessible through somatic practices as well as through verbal reflection.
In Traditional Chinese Medicine, the Zang-Fu organ systems each have associated affective qualities — the Heart houses Shen (clarity and relational presence), the Liver governs emotional flexibility, the Lung is associated with grief. These are not metaphors but functional descriptions: when the Heart’s Shen is disturbed, a person may be anxious, disoriented, or affectively flat. The TCM framework describes affect as distributed across functional systems rather than located in a single organ.
Related terms
- Interoception — the sensory channel through which affect registers
- Psychopathology — affect in the context of psychological suffering
- Shen — TCM’s framework for awareness and affective coherence
- Somatic Awareness — first-person access to affective states through the body