The concept of right hemisphere attention occupies a central and architectonically foundational position in the depth-psychology corpus, most systematically elaborated by Iain McGilchrist across two major works. McGilchrist’s central claim — supported by decades of neurological and experimental research — is that attentional dominance resides more strongly in the right hemisphere than even speech lateralises to the left, and that this dominance holds across handedness groups. What distinguishes this corpus treatment from standard neuropsychological surveys is the philosophical weight McGilchrist assigns to the finding: right hemisphere attention is not merely a cognitive function but the very ground of experience, the mode through which the world first comes into being for any perceiving subject. The right hemisphere attends in a manner that is broad, sustained, vigilant, and open to the unexpected; the left hemisphere, by contrast, narrows focus, suppresses peripheral meaning, and latches onto predetermined schemas. The clinical evidence of hemineglect — almost invariably following right hemisphere damage — serves as the pathological proof of this asymmetry. A key tension in the corpus concerns hierarchy: McGilchrist argues that global, right-hemisphere attention necessarily precedes and grounds the local, focal attention of the left, establishing an integrative primacy that the left hemisphere’s narrowing function depends upon but is prone to usurp. Daniel Siegel contributes a developmental dimension, noting that asymmetric attentional proclivities arise from intrinsic anatomical differences between the hemispheres and shape representational capacities throughout life.
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 empirical primacy of right hemisphere attentional control, demonstrating it is a more robustly lateralised function than language itself.
, 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 across both handedness groups that right hemisphere attentional dominance is the most strongly lateralised of all major cognitive functions.
, 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 hierarchical primacy of right hemisphere global attention over the left hemisphere’s local, focal mode, establishing a foundational sequence in the architecture of experience.
, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009thesis
the hierarchy of attention, for a number of reasons, implies a grounding role and an ultimately integrating role for the right hemisphere, with whatever the left hemisphere does at the detailed level needing to be founded on, and then returned to, the picture generated by the right.
McGilchrist formulates the right hemisphere’s attentional role as both originary and integrative, framing the left hemisphere’s detailed processing as necessarily dependent upon and returned to right hemisphere ground.
, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009thesis
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.
The clinical phenomenon of hemineglect — chronic and devastating when right hemisphere is damaged, transient when left hemisphere is damaged — provides pathological proof of right hemisphere attentional dominance.
, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021supporting
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.
Hemineglect syndrome demonstrates the indispensability of right hemisphere attention: its damage produces chronic, irreversible attentional collapse that left hemisphere damage cannot replicate.
, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021supporting
Alertness and sustained attention may have the ring of technical ‘functions’, just the sort of things it’s hard to get excited about outside the psychology lab. But, like vigilance, they are the ground of our being in the world, not only at the lowest, vegetative level, but at the highest, spiritual levels.
McGilchrist elevates right hemisphere attentional capacities — alertness, sustained attention, vigilance — from mere cognitive functions to the ontological ground of human existence at both biological and spiritual registers.
, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009supporting
the left hemisphere actively narrows its attentional focus to highly related words while the right hemisphere activates a broader range of words. The left hemisphere operates focally, suppressing meanings that are not currently rele
McGilchrist demonstrates that right hemisphere attentional breadth operates at the level of language itself, activating wider semantic fields, in contrast to the left hemisphere’s focal suppression of peripheral meanings.
, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009supporting
The type of attention, then, is critical to what it is that one sees when one encounters the world. And encountering the brain is no exception. If one attends to it in one way, one sees a piece of machinery. If one attends in another, one sees part of a person.
McGilchrist argues that the mode of attention — right hemisphere versus left hemisphere — is ontologically constitutive, determining what kind of reality the attending subject encounters.
, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021supporting
The type of attention, then, is critical to what it is that one sees when one encounters the world. And encountering the brain is no exception. If one attends to it in one way, one sees a piece of machinery. If one attends in another, one sees part of a person.
McGilchrist frames right hemisphere attentional mode as the condition for perceiving living persons rather than mechanisms, establishing its role in fundamental ontological distinctions.
, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021supporting
it is easier for the right hemisphere to adopt the attentional role of the left, if required, than for the left hemisphere to adopt the role of the right. This asymmetry is by no means limited to attention.
McGilchrist identifies an irreversible asymmetry in attentional substitutability: the right hemisphere can assume left hemisphere attentional functions, but not vice versa, reflecting its broader and more foundational capacity.
, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021supporting
Notice the decomposition into parts, and being ‘well defined and conspicuous’, two further indicators that this is left hemisphere attention.
Neurological case studies of right hemisphere tumours reveal that their disruption forces experience into a left hemisphere attentional mode — hyper-detailed, decomposed, arrested — contrasting with normal right hemisphere integrative attention.
, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021supporting
Notice the decomposition into parts, and being ‘well defined and conspicuous’, two further indicators that this is left hemisphere attention.
Clinical right hemisphere glioma cases demonstrate that right hemisphere attentional loss produces pathological decomposition of perceptual wholes into hyper-defined fragments characteristic of left hemisphere attention.
, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021supporting
chicks preferentially use the left eye (right hemisphere) for differentiating familiar members of the species from one another, and from those who are not familiar, and in general for gathering social information.
Cross-species evidence from birds demonstrates the evolutionary depth of right hemisphere attentional specialisation for socially relevant, context-sensitive perception.
, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009supporting
Some interesting sidelights on the relationship between the hemispheres can be seen by examining the way in which these individual differences affect competition for the control of visual attention.
McGilchrist examines hemispheric utilisation bias as a lens for understanding how individual attentional asymmetries reflect the competitive dynamics between right and left hemisphere modes.
, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009supporting
These intrinsic differences may have direct effects on the unfolding of asymmetric attentional proclivities and representational capacities, including the more abstract processes of the neocortex.
Siegel grounds right hemisphere attentional asymmetry in intrinsic anatomical differences that shape developmental trajectories of attention and representational capacity from the outset.
, The Developing Mind: How Relationships and the Brain Interact to Shape Who We Are, 2020supporting
scoring highly on tests of working memory, selective attention and task switching – often higher than the left hemisphere-intact group – right hemisphere-intact subjects found themselves unable to tackle a problem because they were looking for something complex
McGilchrist illustrates a paradox of right hemisphere attentional style: its superior breadth and vigilance can cause subjects to overlook simple solutions by anticipating complexity, revealing the qualitative difference between right and left hemisphere attending.
, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021supporting
the importance of an open, patient attention to the world, as opposed to a wilful, grasping attention; the implicit or hidden nature of truth; the emphasis on process rather than stasis
McGilchrist connects philosophical traditions valorising open, receptive attention to the right hemisphere’s characteristic attentional mode, embedding the neurological concept in broader intellectual history.
, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009aside
For RH and attentional shifts; Corbetta, Kincade, Ollinger et al 2000; Arrington, Carr, Mayer et al 2000.
Bibliographic apparatus citing empirical research on right hemisphere control of attentional shifts, underpinning McGilchrist’s claims about right hemisphere attentional dominance.
, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021aside
For RH and attentional shifts; Corbetta, Kincade, Ollinger et al 2000; Arrington, Carr, Mayer et al 2000.
Reference apparatus documenting neuroimaging evidence for right hemisphere dominance in attentional shifting, the empirical foundation for McGilchrist’s theoretical claims.
, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021aside