Within the depth-psychology corpus, ‘Expression’ occupies a peculiarly contested site where philosophy of language, somatic neuroscience, creative therapeutics, and semiotic theory converge without resolution. McNiff constructs expression as the irreducible telos of the arts-healing encounter — not a symptom to be decoded but a living energetic process whose full range, spanning all sensory modalities, constitutes both the therapeutic medium and the therapeutic outcome. Merleau-Ponty radicalizes this by insisting that expression is not the clothing of pre-formed thought but its very body, an existential meaning that inhabits words rather than being conveyed by them. Derrida, reading Husserl, complicates the picture further: expression is at once reflective and essentially incomplete, a conceptual formality that can in principle repeat sense yet simultaneously displaces it irreparably. Jung encodes expression within his symbol theory, arguing that genuine symbolic expression is always the best possible formulation of something relatively unknown — distinguishing it sharply from mere semiotic signs. Freud’s dream-work locates a second species of displacement in the change of verbal expression itself, where abstract thought-content is exchanged for pictorial, concrete form. Siegel and Porges ground expressive phenomena in neurobiological substrates — facial expression, autonomic tone, and the vagal circuitry of emotional communication. The central tension throughout is whether expression discloses or constitutes its content, and whether therapeutic power lies in the act of expression itself or in its subsequent interpretation.
we need to do more to encourage freedom and allow interplay among different forms of expression. We can embrace the total range of human expression while still striving toward the best possible communication within a particular medium.
McNiff argues that therapeutic healing requires opening to the full spectrum of expressive modalities rather than restricting to any single disciplinary channel.
, Art Heals: How Creativity Cures the Soul, 2004thesis
The greatest service done by expression is not to… speech possesses a power of significance entirely its own… the presence of that thought in the phenomenal world, and, moreover, not its clothing but its token or its body.
Merleau-Ponty maintains that expression is not a transparent vehicle for pre-formed meaning but the very embodied presence of thought in the phenomenal world.
, Phenomenology of Perception, 1962thesis
the transition to being stated adds nothing to sense, or in any event adds no content of sense; and yet, despite this sterility, or rather because of it, the appearance of expression is rigorously new.
Derrida, following Husserl, identifies expression as paradoxically novel precisely because it adds no content to sense, merely reissuing it in conceptual form.
, Margins of Philosophy, 1982thesis
he stresses an essential displacement of expression that will forever prevent it from reissuing the stratum of sense… this difference is nothing less than the difference of the concept.
Derrida demonstrates that expression entails an irreducible conceptual displacement, an incompleteness no effort can overcome, structurally inherent to its formality.
, Margins of Philosophy, 1982supporting
A symbol always presupposes that the chosen expression is the best possible description or formulation of a relatively unknown fact, which is none the less known to exist or is postulated as existing.
Jung distinguishes symbolic expression — the optimal formulation of the relatively unknown — from semiotic signs, making expression the carrier of psychological depth.
, Psychological Types, 1921thesis
The language of behavioral science can convey neither the subtle qualities of creation nor even the most obvious and basic characteristics of an expression, such as the way it moves or vibrates.
McNiff argues that scientific language is structurally incapable of capturing the qualitative, kinetic dimensions of creative expression that matter most in therapeutic contexts.
, Art Heals: How Creativity Cures the Soul, 2004supporting
another sort of displacement… reveals itself in a change in the verbal expression of the thoughts… a less and abstract expression in the dream-thought being exchanged for a pictorial and concrete one.
Freud identifies a second mode of dream-displacement operating at the level of verbal expression, translating abstract thought into concrete pictorial form.
, The Interpretation of Dreams, 1900supporting
The more interesting task is the exploration of how all therapists and artists can open their work to a more complete process of expression.
McNiff frames completeness of expression — rather than specialization — as the more clinically and artistically significant therapeutic goal.
, Art Heals: How Creativity Cures the Soul, 2004supporting
facial expression showing emotional response to a stimulating film was quite evident if a participant believed that he was alone in the room. With the experimenter present, facial expression was quite flat.
Siegel demonstrates that facial expression of emotion is governed by display rules shaped by social context and cultural expectation, implicating right-hemisphere processes.
, The Developing Mind: How Relationships and the Brain Interact to Shape Who We Are, 2020supporting
Less intense environmental demands, often associated with emotion expressions, might be characterized by less withdrawal of parasympathetic tone independent of or in concert with slight increases in sympathetic tone.
Porges situates emotional expression within polyvagal autonomic regulation, linking expressive behavior to graded shifts in parasympathetic and sympathetic tone.
, The Polyvagal Theory: Neurophysiological Foundations of Emotions, Attachment, Communication, and Self-Regulation, 2011supporting
learning to sustain, modify or modulate feeling states through training in sustained online emotional awareness and affective expression through actions, words and thoughts.
Lanius identifies affective expression through action, language, and thought as a core therapeutic intervention for modulating feeling states in trauma treatment.
, The impact of early life trauma on health and disease the, 2010supporting
the most basic being how the element of manual craft determines expressive potency.
McNiff argues that craft — the material and technical dimension of artmaking — directly determines the therapeutic potency of expressive output.
, Art Heals: How Creativity Cures the Soul, 2004supporting
Every act, as also every act-correlate, harbours explicitly or implicitly a ‘logical’ factor… all acts generally — even the acts of feeling and will — are ‘objectifying’ acts, original factors in the ‘constituting’ of objects.
Derrida, citing Husserl, suggests that all acts — including expressive ones — participate in a constitutive objectifying structure that grounds the possibility of sense.
, Margins of Philosophy, 1982aside
typical responses of anger (e.g., threatening expressions, readiness for and actual verbal or physical aggression, seeking to make the target feel bad) are especially suited to dealing with other people.
Lench treats threatening expression as a functionally adaptive emotional behavior calibrated to social targets capable of understanding communications of displeasure.
, The Function of Emotions: When and Why Emotions Help Us, 2018aside