The instinct-image spectrum is among the most architecturally consequential constructs in Jungian depth psychology, situating the archetype precisely between two poles of psychic reality: the infrared zone of somatic, compulsive instinctual drive and the ultraviolet zone of pure fantasy image. Jung's original formulation — elaborated most fully in 'On the Nature of the Psyche' (CW 8, §§397–420) — refuses the Freudian hierarchy that subordinates image to instinct as sublimation; instead, image and instinct occupy opposite ends of a single energic continuum, each implying and partially constituting the other. Hillman, developing this in his archetypal psychology, reads the spectrum as rendering pornographic fantasy and bodily desire not as cause and derivative but as two registers of a single patterned desire. Stein maps the spectrum cartographically within Jung's total model of the psyche, noting that the archetypal 'blue' is always contaminated with instinctual 'red,' yielding the violet of actual psychic experience. Samuels emphasises the clinical corollary: integration of instinct requires not absorption into drive but assimilation through the image that both signifies and evokes it. Hogenson anchors the spectrum in evolutionary epistemology, connecting the primordial image to the triggering of instinctual behaviour, as in Jung's yucca-moth example. The spectrum thus functions simultaneously as a structural model, an energic hypothesis, and a hermeneutic guide for reading somatic symptoms, fantasy, and archetypal imagery as moments in one continuous psychic process.
Jung places images and instinct on a psychological continuum, like a spectrum (CW 8: 397–420). This spectrum, or color band, ranges from an infrared end, the bodily action of instinctual desire, to the ultraviolet blue end of fantasy images.
Hillman offers the clearest explicit exposition of Jung's instinct-image spectrum, contrasting it with Freud's sublimation model and reading pornographic fantasy as the patterned, image-end instantiation of instinctual desire.
, Mythic Figures, 2007thesis
Jung maps the psyche as a spectrum, with the archetype at the ultraviolet end and the instinct at the infrared end. "Because the archetype is a formative principle of instinctual power, its blue is contaminated with red; it appears to be violet."
Stein provides a systematic cartographic account of the spectrum, showing that in lived experience instinct and archetype are never pure but always admixed, yielding the violet of actual psychic motivation.
, Jung's Map of the Soul: An Introduction, 1998thesis
archetypes become seen as psychosomatic entities, occupying a midway position between instinct and image. Jung wrote in 1947: the realisation and assimilation of instinct never takes place by absorption into the instinctual sphere, but only through integration of the image which signifies and at the same time evokes the instinct.
Samuels establishes that the archetype occupies the median of the spectrum, and cites Jung's 1947 formulation that instinct can only be integrated via its corresponding image, not by absorption into drive.
, Jung and the Post-Jungians, 1985thesis
the 'primordial image might suitably be described as the instinct's perception of itself' (Jung 1960, para. 277, Jung's emphasis). In the case of the yucca moth, Jung remarks that there must be some image of the yucca plant that 'triggers off' the instinctual response.
Hogenson traces Jung's evolutionary grounding of the spectrum, showing that the primordial image functions as the instinct's own self-perception, with the yucca-moth case illustrating the image-trigger at the instinctual pole.
, The Baldwin Effect: A Neglected Influence on C. G. Jungs Evolutionary Thinking, 2001supporting
Just as conscious apprehension gives our actions form and direction, so unconscious apprehension through the archetype determines the form and direction of instinct… the yucca moth must carry within it an image, as it were, of the situation that 'triggers off' its instinct.
Jung's own text grounds the spectrum's instinctual pole in the concept of a triggering image that gives form and direction to compulsive biological behaviour.
, The Structure and Dynamics of the Psyche, 1960supporting
This image is a psychic fact whose source lies at the archetypal end of the psychic spectrum. It is wedded to the sexual instinct, and this combination gives the anima/us its driving physical power.
Stein applies the spectrum to the anima/animus complex, demonstrating that the image at the ultraviolet end, when wedded to instinct, generates the concrete erotic force experienced in projection.
, Jung's Map of the Soul: An Introduction, 1998supporting
all unconscious functioning has the automatic character of an instinct, and that the instincts are always coming into collision or, because of their compulsiveness, pursuing their courses unaltered by any influence even under conditions that may positively endanger the life of the individual.
Jung establishes the compulsive, automatic character of instinct that defines the infrared pole of the spectrum, against which consciousness and the synthesising archetype must operate.
, The Interpretation of Nature and the Psyche, 1955supporting
spirit(s): antithesis with instinct, 207; archetype as, 205, 216… and instinct, as limiting will, 183
The index entry from The Structure and Dynamics of the Psyche cross-references instinct, spirit, archetype, and spectrum as co-constitutive structural concepts, confirming their systematic interrelation in Jung's model.
, The Structure and Dynamics of the Psyche, 1960supporting
Sexuality is more than this; it is an instinct with archetypes and complexes behind it.
López-Pedraza affirms the spectrum's claim that instinct is never brute but always already structured by archetypal images and complexes, here in the domain of sexuality and pagan polymorphism.
, Hermes and His Children, 1977supporting
repeated experiences leave residual psychic structures which become archetypal structures. But these structures exert an influence on experience, tending to organise it according to the pre-existing pattern.
Samuels describes the feedback loop between experience and archetypal patterning, providing context for understanding how the image-end of the spectrum acquires its formative authority over instinctual life.
, Jung and the Post-Jungians, 1985aside
A psychosomatic symptom is 'in itself' or, as it were, unbeknownst to itself, emotion (or, it is implicit, latent emotion)… emotion is ansichseiend (or latent) image; image is ansichseiend (or latent) Notion.
Giegerich, via Hegel, proposes a dialectical progression from symptom through emotion to image to concept, implicitly reworking the spectrum's polarity into a logical-developmental sequence rather than a spatial continuum.
, The Soul’s Logical Life Towards a Rigorous Notion of, 2020aside
the lower reaches of the psyche begin where the function emancipates itself from the compulsive force of instinct and becomes amenable to the will, and we have defined the will as disposable energy.
Jung locates the boundary between instinctual compulsion and voluntary psychic function, delineating the threshold within the spectrum at which archetypal patterning becomes accessible to conscious integration.
, The Structure and Dynamics of the Psyche, 1960aside