The right hemisphere stands as one of the most generative and contested constructs in the depth-psychology library, treated not merely as an anatomical division but as a fundamentally distinct mode of being in and attending to the world. Iain McGilchrist, whose two major works dominate the corpus, argues with sustained empirical and philosophical force that the right hemisphere constitutes the 'master' of experience — the ground of global attention, holistic perception, embodied reality-testing, and genuine openness to otherness — while the left hemisphere serves as a capable but partial emissary whose local, sequential, and re-presentational operations must remain subordinate to right-hemispheric primacy. Julian Jaynes, approaching from a different angle, anticipates McGilchrist in locating synthetic, spatial-constructive, and contextualising functions in the right hemisphere, linking this to his bicameral mind thesis. The critical tension running through the corpus concerns the consequences of right-hemisphere suppression or damage: McGilchrist documents how such loss produces delusions, hallucinations, anosognosia, confabulation, and a retreat to the left hemisphere's self-confirming logic — a pathology he diagnoses not only clinically but culturally. The right hemisphere emerges, across these voices, as the locus of truth-contact with reality, creativity, empathy, sustained attention, and the capacity to hold ambiguity — capacities the corpus regards as foundational to psychological and civilisational health.
In the library
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attentional dominance lateralises even more strongly to the right hemisphere than speech does to the left; and left-handers still display right-hemispheric attentional dominance in 81% of cases
McGilchrist establishes the right hemisphere as the dominant controller of attention — more so than the left hemisphere controls speech — across both handedness groups, grounding his argument for right-hemispheric primacy in robust empirical data.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021thesis
attentional dominance lateralises even more strongly to the right hemisphere than speech does to the left; and left-handers still display right-hemispheric attentional dominance in 81% of cases
McGilchrist establishes the right hemisphere as the dominant controller of attention — more so than the left hemisphere controls speech — across both handedness groups, grounding his argument for right-hemispheric primacy in robust empirical data.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021thesis
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, rather than the other way about.
McGilchrist articulates the foundational hierarchy of hemispheric attention, positioning the right hemisphere as the primary, ground-setting mode of awareness that necessarily precedes and governs the left hemisphere's analytic focus.
McGilchrist, Iain, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009thesis
most hallucinations are due to right hemisphere damage or dysfunction. What the research literature to date suggests is that nearly all delusions, as well – in particular the more extravagant ones – are due to right hemisphere damage or dysfunction.
McGilchrist argues that the right hemisphere is the essential arbiter of reality-contact, such that its damage or dysfunction underlies both perceptual hallucinations and reality-distorting delusions.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021thesis
most hallucinations are due to right hemisphere damage or dysfunction. What the research literature to date suggests is that nearly all delusions, as well – in particular the more extravagant ones – are due to right hemisphere damage or dysfunction.
McGilchrist argues that the right hemisphere is the essential arbiter of reality-contact, such that its damage or dysfunction underlies both perceptual hallucinations and reality-distorting delusions.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021thesis
The right hemisphere does not do this. It is totally truthful
Via Gazzaniga's split-brain research, McGilchrist positions the right hemisphere as the honest, reality-anchored partner that corrects the left hemisphere's confabulatory interpretations.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021thesis
The right hemisphere does not do this. It is totally truthful
Via Gazzaniga's split-brain research, McGilchrist positions the right hemisphere as the honest, reality-anchored partner that corrects the left hemisphere's confabulatory interpretations.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021thesis
the right hemisphere has the advantage since its capacity to see the whole is reflected in greater interregional connectivity in the right hemisphere, whereas the left hemisphere is better at processing 'simple, unimodal stimuli'.
McGilchrist grounds the right hemisphere's holistic perceptual superiority in its greater interregional neural connectivity, contrasting this with the left hemisphere's unimodal, piecemeal processing.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021thesis
the right hemisphere has the advantage since its capacity to see the whole is reflected in greater interregional connectivity in the right hemisphere, whereas the left hemisphere is better at processing 'simple, unimodal stimuli'.
McGilchrist grounds the right hemisphere's holistic perceptual superiority in its greater interregional neural connectivity, contrasting this with the left hemisphere's unimodal, piecemeal processing.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021thesis
Deciding when to go with logic and when to go with real-world experience activates the right hemisphere, since, when it is inactive, we answer the question 'is this true?' by reference to the internal logic of the system alone.
McGilchrist argues that the right hemisphere mediates between formal logic and lived reality, ensuring that truth-judgments remain grounded in actual experience rather than closed within the left hemisphere's self-referential system.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021thesis
Deciding when to go with logic and when to go with real-world experience activates the right hemisphere, since, when it is inactive, we answer the question 'is this true?' by reference to the internal logic of the system alone.
McGilchrist argues that the right hemisphere mediates between formal logic and lived reality, ensuring that truth-judgments remain grounded in actual experience rather than closed within the left hemisphere's self-referential system.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021thesis
The right hemisphere presents an array of possible solutions, which remain live while alternatives are explored. The left hemisphere, by contrast, takes the single solution that seems best to fit what it already knows and latches onto it.
McGilchrist characterises the right hemisphere as maintaining open, exploratory cognition against the left hemisphere's confirmatory closure, with implications for creativity, problem-solving, and epistemic health.
McGilchrist, Iain, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009thesis
where the circumstances are unfamiliar, indeterminate or implicit, challenge one's bias, or are not expressed in primarily lexical terms – or require interpretation in the light of context – there will be a critical role for the right hemisphere.
McGilchrist delineates the right hemisphere's special jurisdiction over ambiguous, contextual, and non-lexical reasoning — the very domains where the left hemisphere's analytic confidence most endangers accurate judgment.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021thesis
where the circumstances are unfamiliar, indeterminate or implicit, challenge one's bias, or are not expressed in primarily lexical terms – or require interpretation in the light of context – there will be a critical role for the right hemisphere.
McGilchrist delineates the right hemisphere's special jurisdiction over ambiguous, contextual, and non-lexical reasoning — the very domains where the left hemisphere's analytic confidence most endangers accurate judgment.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021thesis
the right hemisphere is more involved in synthetic and spatial-constructive tasks while the left hemisphere is more analytic and verbal. The right hemisphere, perhaps like the gods, sees parts as having a meaning only within a context; it looks at wholes.
Jaynes anticipates McGilchrist's holism-analysis distinction, aligning the right hemisphere with synthetic, contextualising cognition and mythically connecting it to the divine voices of the bicameral mind.
Julian Jaynes, The Origin of Consciousness in the Breakdown of the Bicameral Mind, 1976thesis
most cases of right neglect [ie, following left hemisphere damage] resolve relatively quickly and the overwhelming majority of patients showing chronic bias has right hemisphere damage.
McGilchrist marshals clinical evidence from hemineglect to demonstrate the right hemisphere's irreplaceable role in sustaining bilateral spatial attention, showing that its loss produces chronic, asymmetric attentional deficits.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021supporting
After severe infantile damage to the left hemisphere, language can develop in the right hemisphere; but the left hemisphere is more rarely able to take over after damage to the right. There is active inhibition of right hemisphere language by the left hemisphere
McGilchrist reveals the asymmetry of hemispheric compensatory capacity, showing the right hemisphere's broader functional range and its active suppression by the dominant left hemisphere.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021supporting
After severe infantile damage to the left hemisphere, language can develop in the right hemisphere; but the left hemisphere is more rarely able to take over after damage to the right. There is active inhibition of right hemisphere language by the left hemisphere
McGilchrist reveals the asymmetry of hemispheric compensatory capacity, showing the right hemisphere's broader functional range and its active suppression by the dominant left hemisphere.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021supporting
there would seem to be a partisanship amongst scientists in the left hemisphere's favour, a sort of 'left-hemisphere chauvinism' at work.
McGilchrist identifies a cultural and institutional bias within neuroscience itself that has systematically undervalued and marginalised the right hemisphere's contributions.
McGilchrist, Iain, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009supporting
the large body of evidence that we looked at in Chapter 8 suggesting the crucial role for the right hemisphere, and more specifically the right superior temporal region, in creativity
McGilchrist defends the empirical case for the right superior temporal gyrus as the neurological seat of creative insight, resisting dismissals that rely on counting null results rather than weighing converging positive evidence.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021supporting
the large body of evidence that we looked at in Chapter 8 suggesting the crucial role for the right hemisphere, and more specifically the right superior temporal region, in creativity
McGilchrist defends the empirical case for the right superior temporal gyrus as the neurological seat of creative insight, resisting dismissals that rely on counting null results rather than weighing converging positive evidence.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021supporting
The superiority of the right hemisphere for recognising faces is yet another lateralised difference that goes a considerable way down the evolutionary chain – for example, it is even present, believe it or not, in sheep
McGilchrist extends right-hemispheric face-recognition superiority across evolutionary lineages, arguing that this capacity represents a phylogenetically ancient and fundamental advantage of right-hemispheric processing.
McGilchrist, Iain, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009supporting
John Cutting refers to an 'overwhelming link with right hemisphere damage'. Patients with this disorder may develop the belief that someone they know is duplicated in different places at different times
McGilchrist draws on Cutting's clinical authority to show that delusional misidentification syndromes — Fregoli, Capgras — arise from right hemisphere damage, implicating this hemisphere in the recognition of personal identity and uniqueness.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021supporting
John Cutting refers to an 'overwhelming link with right hemisphere damage'. Patients with this disorder may develop the belief that someone they know is duplicated in different places at different times
McGilchrist draws on Cutting's clinical authority to show that delusional misidentification syndromes — Fregoli, Capgras — arise from right hemisphere damage, implicating this hemisphere in the recognition of personal identity and uniqueness.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021supporting
An analysis of a large number of previously published cases of auditory hallucinations where they were due to unilateral brain lesions shows that in almost 100% of such cases the lesions are right-sided.
McGilchrist presents near-universal clinical evidence linking auditory hallucinations to right-sided brain lesions, reinforcing the right hemisphere's critical function in correctly arbitrating perceptual experience.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021supporting
An analysis of a large number of previously published cases of auditory hallucinations where they were due to unilateral brain lesions shows that in almost 100% of such cases the lesions are right-sided.
McGilchrist presents near-universal clinical evidence linking auditory hallucinations to right-sided brain lesions, reinforcing the right hemisphere's critical function in correctly arbitrating perceptual experience.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021supporting
only humans, with their right prefrontal cortex, are capable of compassion.
McGilchrist locates the uniquely human capacity for compassion in the right prefrontal cortex, aligning moral feeling with right-hemispheric function and contrasting it with the left-hemispheric capacity for deliberate malice.
McGilchrist, Iain, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009supporting
what is their important function, since it must have been such to preclude its development as an auxiliary speech area? If we stimulate such areas on the right hemisphere today, we do not get the usual 'aphasic arrest'
Jaynes raises the evolutionary question of what the right hemisphere's corresponding areas to Wernicke's area actually do, suggesting they must have a significant undiscovered function — a question he links to the bicameral divine-voice hypothesis.
Julian Jaynes, The Origin of Consciousness in the Breakdown of the Bicameral Mind, 1976supporting
the right hemisphere's affinity for all that is 'other', new, unknown, uncertain and unbounded
McGilchrist characterises the right hemisphere by its fundamental orientation toward novelty, otherness, and open possibility, contrasting this with the left hemisphere's preference for the familiar, certain, and already-categorised.
McGilchrist, Iain, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009supporting
there are hints that the right hemisphere prefers the colour green and the left hemisphere prefers the colour red … The colour green has traditionally been associated not just with nature, innocence and jealousy but with – melancholy
McGilchrist explores subtle perceptual asymmetries in colour preference, linking the right hemisphere's orientation toward green to historical and psychological associations with melancholy and interiority.
McGilchrist, Iain, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009supporting
The left hemisphere tends to focus on what stands out against the ground at the expense of the ground itself; the right hemisphere is better able to see both.
McGilchrist illustrates the right hemisphere's capacity for figure-ground integration through Escher's visually bi-stable images, linking artistic perceptual flexibility to right-hemispheric perceptual capacity.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021aside
All of which return us from the world of the left hemisphere to that of the right.
McGilchrist employs the experience of ruins and temporal flow as phenomenological illustrations of the right hemisphere's world — one of vitality, becoming, and imaginative sublimity over fixed structure.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021aside
We can even have, as personalities, characteristic and consistent biases towards one or other hemisphere, certainly for particular kinds of experience, associated with differing degrees of arousal and activation in either hemisphere.
McGilchrist introduces 'hemispheric utilisation bias' as a stable personality-level trait, suggesting individual differences in right- versus left-hemispheric dominance shape characteristic perceptual and cognitive styles over time.
McGilchrist, Iain, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009aside