Oscillation enters the depth-psychology corpus along several distinct but converging axes. In grief research, particularly within the Dual Process Model articulated by Stroebe, Schut, and elaborated by Neimeyer and O’Connor, oscillation names a regulatory alternation between loss-confrontation and restoration-orientation — a dynamic adaptive process without which mourning stagnates. In somatic and trauma psychology, Levine reconceives oscillation as pendulation: the innate organismic rhythm of contraction and expansion through which frozen traumatic energy discharges in wave-like cycles, analogous to a spring releasing potential energy. Bion introduces the term into group psychology to describe the group’s desperate oscillation between incompatible beliefs about the basic assumption leader — a phenomenon that, when rapid and wide in amplitude, risks explosive emotional eruption beyond the group’s containing capacity. Hillman, from a Jungian archetypal perspective, maps oscillation onto the puer’s entrapment within the mother complex, where desire and guilt alternate in a compulsive, unresolving rhythm. At the neurobiological level, Craig grounds oscillation in alpha and theta EEG frequencies, proposing that each perceptual moment corresponds to one cycle of an endogenous neural oscillation. Simondon, finally, theorises oscillation within a philosophy of individuation, treating the pendulum as a paradigm case of energy conversion between potential forms. Across these registers, oscillation consistently signals the productive tension between opposed poles — regulation versus dysregulation, confrontation versus avoidance, sanity versus madness — whose alternation, rather than resolution, constitutes living process.
Oscillation is a dynamic process of adaptation—a style of alternation between confronting loss and alternation between coping with one of the two ‘stressors.’ Avoidance may be restoration oriented (complete distraction, unrelated daily activities).
Neimeyer presents oscillation as the Dual Process Model’s central regulatory mechanism, a deliberate alternation between loss- and restoration-focused coping that prevents fixation on either pole.
this can only be done by a series of oscillations from one view to the other … the oscillations become very rapid. And when … the distance separating the two beliefs is great … the oscillations have to be both rapid in time and large in excursion.
Bion identifies oscillation as the psychic mechanism by which a basic-assumption group manages the irreconcilable belief that its leader is simultaneously mad and dependably sane, with increasing amplitude threatening group disintegration.
, Experiences in Groups and Other Papers, 1959thesis
The real genius of the dual process model, however, is the jagged line connecting the two ovals in the figure, showing that people go back and forth between these stressors. This oscillation line highlights the process of grieving, rather than only the content of our thoughts and feelings.
O’Connor argues that the oscillation between loss- and restoration-oriented stressors is the defining processual signature of adaptive grief, distinguishing dynamic mourning from static content-focused accounts.
, The grieving brain the surprising science of how we learn, 2022thesis
Through her, his relation with material life oscillates between ecstatic springing of its binds or guilty submission to them. In the sexual sphere, psychoanalysts have called this ‘oscillation,’ the continual back and forth between lust and guilt, guilt and lust.
Hillman invokes oscillation as the archetypal rhythm binding the puer to the mother complex, in which ecstasy and guilt alternate without resolution, trapping masculine energy in a compulsive cycle.
, Senex & Puer, 2015thesis
While trauma is about being frozen or stuck, pendulation is about the innate organismic rhythm of contraction and expansion. It is, in other words, about getting unstuck by knowing (sensing from the inside), perhaps for the first time, that no matter how horrible one is feeling, those feelings can and will change.
Levine reconceives oscillation as pendulation — the somatic alternation between contraction and expansion that constitutes the body’s intrinsic self-healing rhythm and the therapeutic antidote to traumatic freezing.
, In an Unspoken Voice: How the Body Releases Trauma and Restores Goodness, 2010thesis
Then as you release the spring, the weight oscillates up and down until all of the spring’s energy is discharged. In this way, the potential energy held in the spring is
Levine employs the physics of an oscillating spring as an analogy for somatic trauma discharge, grounding the concept of pendulation in the mechanics of potential-to-kinetic energy conversion.
, In an Unspoken Voice: How the Body Releases Trauma and Restores Goodness, 2010supporting
if the two potential energies … were rigorously equal, the pendulum would have a period of infinite oscillation, i.e. would be in a state of indifferent equilibrium. Everything occurs as if the potential energy that is effectively converted into kinetic energy and then reconverted into potential energy during an oscillation were an energy resulting from the difference between two other potential energies.
Simondon theorises oscillation as a paradigmatic instance of individuation, where the pendulum’s rhythm emerges precisely from an asymmetry between two potential energy states rather than from equilibrium.
, Individuation in Light of Notions of Form and Information, 2020supporting
that corresponds to one cycle of a 10-Hertz (100 milliseconds) to 8-Hertz (125 milliseconds) oscillation, which is an alpha (~10–14 Hz) or theta (~6–8 Hz) EEG oscillation frequency in the brain.
Craig grounds subjective perceptual moments in neural oscillation frequencies, proposing that each moment of consciousness corresponds to one cycle of an endogenous alpha or theta brainwave oscillation.
, How Do You Feel? An Interoceptive Moment with Your Neurobiological Self, 2015supporting
a stochastic sequence of quantal storage units … is formed … that sequence produces a natural flow of moments across time at the rate of the endogenous oscillation, which is the natural time-base, or some multiple thereof.
Craig proposes that the endogenous neural oscillation functions as the organism’s fundamental time-base, generating the sequential quantal storage of felt moments that constitutes subjective temporal experience.
, How Do You Feel? An Interoceptive Moment with Your Neurobiological Self, 2015supporting
György Buzsáki and a colleague, Markku Penttonen, examined the relationship between different brainwave patterns (‘neuronal oscillatory frequencies’) in a rat’s hippocampus … They found there were three independently generated frequencies in widely different, but reliably predictable, ranges.
McGilchrist cites neuronal oscillatory frequencies as evidence for the brain’s intrinsic capacity to combine ordered regularity with spontaneous variability, illustrating the co-existence of sameness and difference at the neurological level.
, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021supporting
Like a piston in this engine, the fire inside us keeps up an oscillating motion as it accompanies the breath; and its action is now invoked to effect the work of digestion—another process that goes on without the intervention of consciousness.
In the Timaeus, Plato employs oscillation as a mechanical principle of the body’s respiratory fire, describing physiological processes — breathing and digestion — as driven by a continuous oscillating motion independent of conscious will.
, Plato’s cosmology the Timaeus of Plato, 1997supporting
When indicators of hyper-or hypoarousal are noted, the therapist endeavors to help the client find just the right physical action to facilitate regulation.
Ogden’s sensorimotor approach implies oscillation through its focus on working the client between hyper- and hypoarousal states, though the term itself is not foregrounded in this passage.
, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006aside
the immediacy of communitas gives way to the mediacy of structure, while, in rites de passage, men are released from structure into communitas only to return to structure revitalized by their experience of communitas.
Turner’s dialectic between communitas and structure constitutes a sociological analogue of oscillation, in which the rhythm between anti-structural and structural poles sustains collective vitality.
, The Ritual Process Structure and Anti-Structure, 1966aside