Within the depth-psychology and neuropsychological corpus, ‘right side’ operates on two distinct but interpenetrating registers: the neuroanatomical and the symbolic-archetypal. On the neuroanatomical plane, the right side of the brain — and, by extension, the right hemisphere as a functional whole — emerges across multiple authoritative voices as the primary locus of holistic, contextual, and affective processing: the domain of sustained attention, social attunement, emotional regulation, and the apprehension of novelty (McGilchrist, van der Kolk, Porges, Siegel, Craig). The right hemisphere’s dominance in autonomic regulation, its recruitment during traumatic flashback, its role in detecting gestalt patterns, and its susceptibility to hemineglect when damaged all receive sustained treatment. Porges and Craig document how the right side of the brain maintains asymmetric control over autonomic and interoceptive functions, while van der Kolk observes that trauma activates specifically the right hemisphere. On the symbolic register, Jung and von Franz situate the right side within a cosmological and alchemical grammar, where it corresponds to the solar, masculine, conscious, and ordered pole of experience — the realm of Mercury and divine reason — standing in structured opposition to the lunar left. Jodorowsky, working from the tarot tradition, maps right and left onto mirror-image liturgical architectures. The tension between these two registers — one empirical-neurological, one mythopoeic — constitutes the productive ambiguity of this term throughout the library.
during flashbacks, our subjects’ brains lit up only on the right side. Today there’s a huge body of scientific and popular literature about the difference between the right and left brains.
Van der Kolk’s neuroimaging data establishes that traumatic flashback is a specifically right-sided cerebral phenomenon, grounding the clinical importance of hemispheric asymmetry in trauma theory.
, The Body Keeps the Score: Brain, Mind, and Body in the Healing of Trauma, 2014thesis
the right side of the brain is always dominant in the regulation of autonomic function and, thus, emotion. Data from stimulation studies using left and right visual fields indicate that activation of the right cortex results in larger and more reliable autonomic responses.
Porges argues that the right hemisphere’s dominance over autonomic regulation is invariant across individuals, making it the neurological foundation of emotional and visceral responsivity.
, The Polyvagal Theory: Neurophysiological Foundations of Emotions, Attachment, Communication, and Self-Regulation, 2011thesis
you would expect to find on the right side, when you see stars there? … Yes, order, of course. The cosmos is a conscious arrangement. One would assume order to be on the conscious side.
Jung assigns the right side a symbolic valence of cosmic order, consciousness, and the masculine principle, situating the term within a traditional mythopoeic geography of psychic space.
, Dream Interpretation Ancient and Modern: Notes from the Seminar Given in 1936-1941, 2014thesis
He behaves as if there simply is no left side to his body; he will wash and shave only the right half of his face. He eats all that’s on the right of his plate and leaves everything to the left.
McGilchrist uses the clinical phenomenon of hemineglect following right hemisphere damage to demonstrate how the right side becomes the exclusive horizon of a patient’s experiential world when the left is neurologically erased.
, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021thesis
He behaves as if there simply is no left side to his body; he will wash and shave only the right half of his face. He eats all that’s on the right of his plate and leaves everything to the left.
A duplicate witness to McGilchrist’s account of hemineglect, confirming that right-sided perceptual bias becomes total and behaviorally enacted when left-hemispheric space is neurologically absent.
, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021thesis
electrical stimulation of the right insula reportedly produces increased heart rate (tachycardia), whereas stimulation of the left insula produces decreased heart rate (bradycardia). Similarly, cool stimuli … activate the anterior insula on the right side exclusively.
Craig presents neurophysiological evidence that the right anterior insula is the dedicated substrate for sympathetic arousal, mapping the right side onto a somatic architecture of threat and mobilization.
, How Do You Feel? An Interoceptive Moment with Your Neurobiological Self, 2014thesis
He was unaware of the oddity and absurdity of having only a right half … not only has the patient lost the perception of the left half of his body … he has also forfeited the memory of the left half of his body.
McGilchrist details how right-hemisphere damage reduces the body’s representational world to its right half alone, implicating imagination and memory — not merely sensation — in the construction of bodily wholeness.
, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021thesis
The right hemisphere is considered to work as a pattern recognition center, assessing the gestalt and context of input from a synthetic mode of processing. The left, in contrast, uses logical and analytical processing.
Siegel summarizes the foundational laterality research distinguishing right-hemisphere holistic, contextual processing from left-hemisphere analytic processing, situating the right side as the organ of synthetic comprehension.
, The Developing Mind: How Relationships and the Brain Interact to Shape Who We Are, 2020supporting
the right hemisphere has by far the greater control of attention in general, as well as for switching attention … attentional dominance lateralises even more strongly to the right hemisphere than speech does to the left.
McGilchrist marshals extensive research to establish that attentional primacy — more pronounced even than speech lateralization — belongs to the right hemisphere, making the right side the pre-eminent director of conscious engagement with the world.
, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021supporting
The functional dominance of the right side of the brain in regulating autonomic function and emotion may have implications for the specialization of motor and language dominance on the left side of the brain.
Porges proposes that the right side’s comprehensive responsibility for homeostatic and emotional regulation may have been the evolutionary precondition that freed the left hemisphere to develop language and voluntary motor control.
, The Polyvagal Theory: Neurophysiological Foundations of Emotions, Attachment, Communication, and Self-Regulation, 2011supporting
there are 30% to 50% more VENs on the right side than on the left side. These findings seem consistent with the dominant role of the right AIC in network control … and with its association with sympathetic autonomic function.
Craig cites neuroanatomical evidence that the right anterior insular cortex contains significantly more von Economo neurons, providing a structural basis for its dominant role in interoceptive and autonomic network governance.
, How Do You Feel? An Interoceptive Moment with Your Neurobiological Self, 2014supporting
chicks preferentially use the left eye (right hemisphere) for differentiating familiar members of the species from one another … Chicks approach their parents or an object on which they have imprinted using their left eye (right hemisphere).
McGilchrist extends the right hemisphere’s role in social recognition and attachment across species, showing that even in birds the right side governs the processing of familiar social bonds.
, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009supporting
the right forebrain controls sudden, arousing avoidance behaviors and responses to unexpected stimuli in potentially dangerous circumstances … A chick with its right eye covered has difficulty finding food particles to eat.
Craig documents ethological evidence across vertebrates that the right forebrain mediates danger-detection and avoidance, while the left manages routine approach behavior, giving the right side a phylogenetically conserved role in vigilance.
, How Do You Feel? An Interoceptive Moment with Your Neurobiological Self, 2014supporting
where the circumstances are unfamiliar, indeterminate or implicit, challenge one’s bias, or are not expressed in primarily lexical terms … there will be a critical role for the right hemisphere.
McGilchrist specifies the epistemic domain in which the right hemisphere is indispensable: non-lexical, contextually complex, or implicit reasoning — precisely the terrain where left-hemisphere over-generalization produces systematic error.
, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021supporting
where the circumstances are unfamiliar, indeterminate or implicit, challenge one’s bias, or are not expressed in primarily lexical terms … there will be a critical role for the right hemisphere.
A duplicate passage reinforcing the right hemisphere’s cognitive indispensability in conditions of ambiguity, novelty, and implicit context — the very conditions that defeat purely lexical reasoning.
, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021supporting
nearly all delusions … in particular the more extravagant ones … are due to right hemisphere damage or dysfunction … Distinguishing delusions (distorted reality judgments) from hallucinations (distorted perceptions) is to some degree.
McGilchrist argues that the right hemisphere is the primary organ of reality-testing, its damage or dysfunction generating delusion — implicating the right side as the brain’s anchor in veridical judgment.
, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021supporting
Global attention, courtesy of the right hemisphere, comes first, not just in time, but takes precedence in our sense of what it is we are attending to; it therefore guides the left hemisphere’s local attention.
McGilchrist establishes a temporal and hierarchical precedence of right-hemisphere global attention over left-hemisphere local analysis, making the right side the originary frame of all experience.
, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009supporting
she swivels to the right, through a circle, until it comes into view … If her portions seem too small, she will swivel to the right, keeping her eyes to the right, until the previously missed half now comes into view.
Sacks renders vivid the behavioral consequence of right-side perceptual dominance in a hemineglect patient who compensates for absent left-field awareness through repeated rightward rotation.
, The Man Who Mistook His Wife for a Hat, 1985supporting
Stroke patients sometimes fail to perceive or attend to one side of their body … A lesion in the right parietal lobe, for example, may cause neglect of the left side of the body.
Gallagher invokes right-parietal hemineglect as phenomenological evidence that the body schema — normally pre-reflective and implicit — can be disrupted by right-sided lesions that excise the left body from self-awareness.
, How the Body Shapes the Mind, 2005supporting
in Tantric Buddhist temples, the male deities are placed facing our left side and females our right side … cathedrals behave like mirrors. The right side of the building represents our left side and the left side our right.
Jodorowsky maps the right side onto competing sacred geographies — Buddhist and Judeo-Christian — showing how the symbolic valence of right and left reverses according to whether the sacred space is a mirror or a threshold.
, The Way of Tarot: The Spiritual Teacher in the Cards, 2004supporting
The right hemisphere does not do this. It is totally truthful … the left hemisphere had no clue, it would not be satisfied to state it did not know. It would guess, prevaricate, rationalize.
Quoting Gazzaniga, McGilchrist contrasts the right hemisphere’s truthfulness with the left hemisphere’s confabulatory imperative, locating epistemic honesty specifically on the right side of the brain.
, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021aside
the right hemisphere is attracted to figures drawn according to the golden ratio … the assessment of symmetry or asymmetry is specifically right hemisphere-dependent — ‘a cognitive function lateralized to the right hemisphere for most of the population.’
McGilchrist extends the right hemisphere’s aesthetic sensibility to symmetry detection and the golden ratio, linking the right side to the perception of beauty and formal harmony.
, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021aside
each function operates in a different area of the brain. Each type not only activates a distinct set of neurological sites but also favors one side of the brain over the other.
Thomson situates Jungian typological functions within a neurological framework, proposing that psychological type corresponds to hemispheric lateralization, with each function type preferentially engaging one side of the brain.
, Personality Type: An Owner’s Manual, 1998aside