Within the depth-psychology corpus, 'Activity' operates across several registers simultaneously, and its treatment reveals deep tensions between traditions. In Aristotelian ethics as recovered by Nussbaum, activity (energeia) is constitutive of eudaimonia itself — not a means to the good life but its very substance — yet it remains irreducibly vulnerable to external impediment, like a river that may be dammed or silenced at the source. Taoist readings of the I Ching introduce a crucial distinction between inner and outer activity, arguing that the quality of external action is entirely determined by the authenticity or artificiality of internal movement. Contemporary somatic and trauma-focused thinkers such as Ogden and Levine treat activity differently again: as a stage in the orienting response, as a marker of nervous-system state, and as a therapeutic target — where over-activity, under-activity, and arrested activity each signal dysregulation. In ACT (Harris), every activity is morally and psychologically neutral until assessed in context: it is either a 'towards move' aligned with values or an 'away move' driven by avoidance. Neuroscientific contributors (Schore, Damasio, Lench) use 'activity' in a more literal cortical and subcortical sense, tracking how fluctuating neural activity patterns underwrite emotion, reward, and executive function. Across traditions the fundamental tension is this: whether activity is inherently good (the Aristotelian thesis), contextually determined (the ACT and Taoist positions), or merely a measurable neural index whose valence depends entirely on the system in which it appears.
Aristotle defines pleasure as the unimpeded activity, energeia, of the natural hexis, implying that sicknesses and other reversals can cramp and impede many types of natural activity.
Nussbaum, reading Aristotle, argues that activity (energeia) constitutes the good life but is inherently fragile — susceptible to external impediment and internal corruption — so that flourishing can never be fully secured.
, The Fragility of Goodness: Luck and Ethics in Greek Tragedy and Philosophy, 1986thesis
Inner activity means the movement of inward thoughts, outer activity means the activity of affairs that come up ... If inner activity is genuine, outward activity will also be genuine; if inner activity is artificial, outward activity will also be artificial.
The Taoist reading establishes that external activity is entirely determined in quality by inner activity — authentic inward movement produces genuine outward action, while artificial interiority corrupts all outward conduct.
, The Taoist I Ching, 1986thesis
It's not about the activity we're doing; it's about the effects that activity is having. In contexts where an activity takes us toward the life we want ... it's a towards move.
Harris argues that no activity carries intrinsic psychological valence; its meaning is entirely context-dependent, determined by whether it serves values-guided living or functions as avoidance.
, ACT Made Simple: An Easy-To-Read Primer on Acceptance and Commitment Therapy, 2009thesis
Eudaimonia, 284, 297, 374, 375, 377, 379, 458, 496; and activity, see Activity ... and tuche, 318-42, 384, 386; see also Activity, role in good life, Stability, Vulnerability.
The index entry confirms that Nussbaum's entire analysis of eudaimonia is structured around 'Activity' as its central organizing concept, permanently entangled with luck, stability, and vulnerability.
, The Fragility of Goodness: Luck and Ethics in Greek Tragedy and Philosophy, 1986supporting
Arousal / Activity arrest / Sensory alertness / Muscular adjustments / Scanning / Location in space / Identification and appraisal / Action / Reorganization.
Ogden identifies 'activity arrest' as a discrete stage in the orienting response sequence, treating modulations of activity level as both a clinical target and a window into how the traumatized body processes threat.
, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006supporting
The highly elevated levels of stimulation-seeking exploratory (play) behavior that accompany the onset of upright locomotion also reflect the increased activity of the mesocortical dopamine system.
Schore links heightened behavioral activity in the practicing period to mesocortical dopaminergic activity, grounding the developmental flourishing of exploratory behavior in specific neurochemical substrates.
, Affect Regulation and the Origin of the Self: The Neurobiology of Emotional Development, 1994supporting
Always staying so busy interfered with his enjoyment of life, and especially quiet, tender, or relaxing moments that had 'no purpose.' Every night at dinner, his parents would ask, 'What do you have to show for yourself today?'
Ogden illustrates how compulsive over-activity, rooted in a family system that prized 'doing' over 'being,' constitutes a somatic and psychological defense against vulnerability and rest.
, Sensorimotor Psychotherapy Interventions for Trauma and, 2015supporting
They observed increased CEN activity and decreased DMN activity when people were in a state of flow ... When doing the easy math sums, participants were bored and demonstrated increased activity in the DMN with concomitant decreases in CEN activity.
Lench reports that the experiential quality of activity — flow versus boredom — is neurally indexed by reciprocal CEN and DMN activity, making subjective engagement inseparable from measurable cortical dynamics.
, The Function of Emotions: When and Why Emotions Help Us, 2018supporting
The DMN is characterized by high intrinsic activity during resting states ... that decreases when subjects engage in goal-directed tasks.
Alcaro establishes that the brain's default mode sustains a form of spontaneous self-referential activity whose suppression, paradoxically, marks the onset of purposeful external engagement.
, The 'Instinct' of Imagination: A Neuro-Ethological Approach to the Evolution of the Reflective Mind and Its Application to Psychotherapy, 2019supporting
The brain activity that signals a certain entity and transiently forms a topographically organized representation in the appropriate early sensory cortices ... and a representation, located in a convergence zone, that receives signals from those first two sites of brain activity.
Damasio frames neural activity as the mechanism through which body states and external entities are brokered into the somatic marker system, making activity a technical term for the neurological substrate of emotional reason.
, Descartes' Error: Emotion, Reason, and the Human Brain, 1994supporting
When rajas predominates, a person runs about pursuing selfish and greedy ends, driven by restlessness and desire.
Easwaran's commentary situates rajasic activity as frenetic, passion-driven movement that mistakes compulsive pursuit for purposeful action, contrasting it with sattvic activity that proceeds from stillness.
, The Bhagavad Gita for Daily Living: A Verse-by-Verse Commentary, 1975supporting
The lowest guna is tamas, the state of inertia ... when duties call for us to act, we feel inclined to say, 'What does it matter? Why not drop out of society?'
Easwaran identifies tamas as the suppression of right activity through inertia, framing motivational paralysis as a spiritual and psychological pathology in the Gita's three-guna framework.
, The Bhagavad Gita for Daily Living: A Verse-by-Verse Commentary, 1975supporting
As William Blake suggested two hundred years ago in The Marriage of Heaven and Hell, 'Energy is the only life, and is from the Body.' The kinds of energy we generate, and do not generate, have a tremendous impact on others.
McNiff invokes Blake to argue that the quality of creative activity is inseparable from embodied energy, and that the depth of expressive activity in therapeutic studios is interpersonally and reciprocally generative.
, Art Heals: How Creativity Cures the Soul, 2004supporting
In bottom-up control, subcortical neuromodulators alter cortical activity. In addition to the two catecholaminergic nuclei, hypothalamic hormonal output also influences the.
Schore notes that subcortical neuromodulators constitute a bottom-up pathway through which chronic stress alters the baseline level of cortical activity, impeding the orbitofrontal adaptive function.
, Affect Regulation and the Origin of the Self: The Neurobiology of Emotional Development, 1994aside
Methylphenidate decreases blood flow to the ventral anterior cingulate cortex, posterior cingulate cortex, and inferior parietal cortex in adults with ADHD in direct proportion to improved performance on cognitive tasks.
Peterson frames default-mode activity suppression as a mechanism through which stimulant medication restores goal-directed performance, treating activity level in specific neural regions as a proxy for attentional regulation.
, An fMRI Study of the Effects of Psychostimulants on Default-Mode Processing During Stroop Task Performance in Youths With ADHD, 2009aside
Sexual desire and activity ... activity/passivity in, 143, 173, 354, 356; and desire for wisdom, 180, 216-17; as element of philia, 354, 358, 359.
Nussbaum's index places sexual activity within the broader framework of philia and the good life, noting that the activity/passivity distinction within erotic life carries ethical weight in Aristotle's account.
, The Fragility of Goodness: Luck and Ethics in Greek Tragedy and Philosophy, 1986aside