Measuring consciousness: relating behavioural and neurophysiological approaches.

Area of Science:

• Cognitive Neuroscience
• Philosophy of Mind
• Neuroscience

Background:

• The study of consciousness is experiencing a resurgence, with a growing focus on the critical issue of measurement.
• Dependable measures are vital for connecting experimental findings to theoretical frameworks and for designing effective experiments in consciousness research.

Purpose of the Study:

• To review and assess various behavioral and brain-based measures of consciousness.
• To clarify the relationships between different measures and the theoretical assumptions they entail.
• To identify potential conflicts among measures that could inspire new research directions.

Main Methods:

• Systematic review of existing literature on consciousness measurement.
• Analysis of behavioral measures (e.g., response accuracy, reaction time).
• Evaluation of brain-based measures (e.g., EEG, fMRI, fNIRS).

Main Results:

• Different measures exhibit varying abilities to track graded levels of consciousness.
• The theoretical underpinnings of each measure are clarified, revealing potential conflicts.
• Identified inconsistencies among measures suggest avenues for future experimental investigation.

Conclusions:

• Measures of consciousness must be validated iteratively within theoretical frameworks.
• Advances in measurement have significant implications for cognitive neuroscience, comparative psychology, and clinical practice.
• Reliable measurement is key to progress in understanding consciousness.