Two neural correlates of consciousness

Area of Science:

• Neuroscience
• Cognitive Science
• Philosophy of Mind

Background:

• The search for a single neural correlate of consciousness (NCC) has been a central challenge in neuroscience.
• Existing empirical data presents complexities that may not be fully explained by a unitary NCC framework.

Purpose of the Study:

• To propose and advocate for a framework positing at least two distinct neural correlates of consciousness.
• To differentiate between phenomenal NCC and access NCC.
• To demonstrate how this dual-NCC model better accounts for current empirical findings.

Main Methods:

• Theoretical argumentation for a dual-NCC framework.
• Distinction between phenomenal NCC and access NCC.
• Application of signal-detection theory approaches for experimental differentiation.
• Review of recent cognitive neuroscience findings.

Main Results:

• A framework with two distinct NCCs (phenomenal and access) offers a more coherent explanation of empirical results.
• Signal-detection theory provides a viable method for experimentally distinguishing between these two NCCs.
• Recent empirical data supports the existence of two separate NCCs.

Conclusions:

• The concept of a single NCC may be insufficient to capture the complexity of consciousness.
• A dual-NCC framework, distinguishing phenomenal and access NCC, provides a more robust model for understanding consciousness.
• Future research should focus on experimental designs that can differentiate these two correlates.