The Consciousness Atlas is an interactive web app that visualizes more
than 450 theories of consciousness. It is based on Robert Lawrence
Kuhn's 2024 paper,
"A Landscape of Consciousness". The Atlas maps theories that address phenomenal consciousness - the
subjective feel of experience, such as the redness of red.
What the Atlas is
The Atlas is a visual reference built on Kuhn's taxonomy. It presents
the full set of theories at once so you can explore the field visually
and open any theory to read its entry, like an encyclopedia with
structured entries. Each theory entry shows a concise identity line,
conceptual ground, suggested mechanism, empirical notes, implications,
and sources.
Why this exists
Consciousness is studied across disciplines - neuroscience,
philosophy, and sometimes spiritual or anomalous-state research.
Kuhn's paper collects and organizes hundreds of theories along a
spectrum from most physical to least physical. The Atlas puts that
organization into a visual form so readers, students, and researchers
can quickly see how different positions relate and where each theory
sits on the spectrum.
How it works
Theories are grouped into ten main categories, arranged by their
stance on the physical-to-nonphysical spectrum. Examples of categories
include Materialism, Non-Reductive Physicalism, Functionalism,
Quantum-based theories, Panpsychism, Monism, Dualism, Idealism,
Anomalous States, and Challenge Theories. The app shows the whole map
at once. Click any theory to read its structured entry, which includes
references to canonical sources and named thinkers.
Who it is for
- Students learning philosophy of mind and cognitive science
-
Researchers and lecturers looking for an at-a-glance comparative
resource
-
Journalists and writers who need a quick reference to the range of
positions
-
Curious readers who want a clear view of what people mean when they
talk about consciousness
What the Atlas does not do
The Atlas does not endorse or rank theories. It is a visualization and
reference based on Kuhn's taxonomy - collect and present, not judge.
It does not attempt to settle the hard problem of consciousness. It is
a tool for exploration and comparison.
A note from Kuhn
Kuhn explicitly states the project's purpose: "collect and categorize,
not assess and adjudicate." The Consciousness Atlas follows that
approach. The data and structure are derived from Kuhn's paper;
feedback and suggested corrections are welcome, but the app is a
visualization layer on top of Kuhn's work.
Kuhn was not involved in the design or content of the Consciousness
Atlas, other than his original paper, 'A Landscape of Consciousness,'
which is the sole source.
FAQ
What is phenomenal consciousness?
Phenomenal consciousness refers to subjective experience - the
qualitative feel of being aware, like the taste of coffee or the
redness of red.
How many theories does the Atlas include?
The Atlas visualizes over 220 individual theories, grouped into ten
broad categories.
Does the Atlas show which theory is true?
No. The Atlas presents theories neutrally. It is a map, not an
argument for any single position.
Is the Atlas academic?
The Atlas is based on an academic source - Robert Kuhn's 2024 paper,
"A Landscape of Consciousness" - and links to canonical sources
where available.
Summary
The Consciousness Atlas is a straightforward visualization tool: it
presents Kuhn's taxonomy as a single, explorable map and lets users
open individual theory entries to read structured, referenced
summaries. It is designed to make this complex field easier to survey
and to serve as a practical reference.
Non-Reductive
Maxwell’s Unique-Matching Theory
Consciousness as the Felt Aspect of Matched Brain Structure
Maxwell argues that consciousness is the experiential aspect of certain brain processes, knowable only by having a similar process in one's own brain. He explains why particular sensations go with particular brain processes by positing a unique, structure-preserving one-to-one mapping between a continuous space of all possible sensations and a space of functionally described brain processes.
Nicholas Maxwell
What consciousness is
Consciousness is what it is like to have a given brain process occur in one's own brain, and nothing more.
Mind and body
Brain processes have a physical aspect that science describes and an experiential aspect it cannot capture. Maxwell calls this two-aspect view ‘experiential functionalism’.
Mechanism
Unique matching: only one assignment of sensations to functionally described brain processes preserves continuity and unity across both spaces, so the correlations hold out of structural necessity.
Core claims
- Physics can be fully understood without any particular sensation, so it cannot predict or explain the experiential aspect of brain processes.
- The existence of consciousness, like the existence of the physical, cannot be explained in principle, because explanation requires appeal to something else.
- A God-like being able to experience every possible sensation would find smooth transitions between seeing and hearing, placing all sensations in one continuous space.
- Building on Chalmers's principle of structural coherence, Maxwell argues that a unique isomorphism between sensation space and brain-process space would explain brain-consciousness correlations without reduction.
Criticisms
Maxwell himself anticipates the reaction that the theory is ‘much too wild and crazy’ to be a serious candidate. The argument depends on a God-like brain experiencing all possible sensations and on the assumption that the mapping is unique, neither of which can be checked.
Implications
- AI consciousness: Uncertain
- Sensations are matched to functionally described brain processes, but Maxwell rejects functionalism and ties experience to brain processes, so the status of machines is left open.
- Survival beyond death: Unlikely
- Since consciousness is an aspect of brain processes on this view, it should end when those processes end.
Related theories
Sources
- Maxwell’s Unique-Matching Theory (Landscape of Consciousness), Nicholas Maxwell
Explore all theories on the Consciousness Atlas
