Mechanistic Theories of Life, Sensation & Consciousness
Exploring the leading scientific theories for the origins of life's most fundamental phenomena
Chemical Origin of Life
Abiogenesis & Systems Chemistry
-
RNA World HypothesisSelf-replicating RNA molecules as both genetic material and catalysts
-
Metabolism-First HypothesesAutocatalytic metabolic networks preceded genetic systems
-
Hybrid ModelsCombining replication and metabolism for mutual reinforcement
-
CompartmentalizationFormation of protocells via lipid membranes for concentration and protection
Origin of Sensation
From Responsiveness to Perception
-
Evolution of Sensory MechanismsPrimitive cells developed receptors for environmental stimuli
-
Connection to MetabolismEarly metabolic networks integrated sensory functions
-
Neurobiological PerspectivesSpecialized neurons and neural circuits for sensation
-
Global Neuronal Workspace TheorySensory information becomes conscious when broadcast globally
Origin of Consciousness
Emergence from Neural Complexity
-
Integrated Information Theory (IIT)Consciousness corresponds to integrated information in neural networks
-
Global Neuronal Workspace Theory (GNWT)Consciousness emerges when information is distributed across cortical regions
-
Electromagnetic TheoriesBrain EM fields unify neural information, solving the "binding problem"
-
Biochemical BasisNeurotransmitters, ion channels, and neural oscillations critical for consciousness