Introduction
- Cognition studies traditionally focused on humans and close mammals, leaving out many simpler organisms.
- The slime mould, Physarum polycephalum, is an example of a minimal cognitive system, showing how simple organisms can process information.
- This study looks at how slime mould can help us understand the emergence of cognition and proto-consciousness.
- Physarum polycephalum is a unique organism that uses computational processes to exhibit intelligent behaviors.
Minimal Cognition: The Bottom-up Approach
- Cognition is explored in its simplest form, moving beyond just human or mammal-based approaches to include simpler organisms like slime moulds.
- Slime moulds can perform cognitive tasks through their biological and biophysical mechanisms.
- Minimal cognition in slime moulds refers to their ability to process, store, and act on information without a nervous system.
Defining the Nature of Slime Mould
- Slime moulds exist in three types: acellular, cellular, and unicellular.
- Physarum polycephalum, a plasmodial slime mould, has a complex life cycle, including stages that allow it to demonstrate intelligence in foraging and problem-solving.
- The plasmodium, a multinucleate stage, optimizes its protoplasmic network for nutrient acquisition and efficient movement.
What Does a Slime Mould Know?
- Slime moulds process information based on gradients of attractants and repellents in their environment.
- They make decisions, such as avoiding harmful chemicals or choosing the best nutrient sources.
- Slime moulds don’t react automatically like machines but evaluate their environment and respond intelligently.
Modifiable Stimulus-Response Pathways from an Autopoietic Perspective
- Living systems, like slime moulds, are autonomous and self-regulating.
- They adjust their behavior based on internal regulations and external stimuli.
- Recognition of the environment allows slime moulds to adapt and make decisions, for example, choosing a path that leads to better nutrition.
Significant Regulation
- Slime moulds show regulatory behavior based on environmental stimuli, which they interpret and respond to.
- Electrical activity and the regulation of internal processes like calcium ions contribute to their movement and behavior.
Electrical Activity
- Calcium ions play a crucial role in regulating slime mould’s contractile movements and oscillations.
- This electrical activity is similar to neural processes in animals, though slime moulds lack a nervous system.
Regulatory Subsystems Independent of Metabolic Processes
- Slime moulds can exhibit behaviors like chemotaxis, where they move toward or away from certain chemicals.
- Their internal regulatory systems allow them to make decisions based on these environmental cues, demonstrating a form of cognition.
Minimal Cognitive Principles in Myxomycetes
- Minimal cognition involves basic information processing systems that allow organisms like slime moulds to make decisions based on their environment.
- These principles can be studied across species to understand the evolution of cognitive capabilities in living systems.
Emerging Sources of Cellular Levels of Sentience and Consciousness
- Consciousness may be a basic property inherent in all biological organisms, including slime moulds.
- Ion channels, neurotransmitters, and cellular structures like microtubules in slime moulds contribute to their ability to process information and demonstrate proto-consciousness.
Proto-consciousness and Morgan’s Canon
- Proto-consciousness refers to a basic form of self-awareness and data integration that is not reliant on a nervous system.
- Slime moulds exhibit proto-consciousness through their ability to integrate information and make decisions based on past and present experiences.
The Computing Slime Mould as Kolmogorov-Uspensky Biomachine
- The slime mould can be considered a Kolmogorov-Uspensky machine, using its environment to process information and make decisions based on spatial patterns.
- This shows that slime moulds can compute information without needing a brain or central nervous system.
Slime Mould Complexity and Brainless Information Integration System
- Despite lacking a brain, slime moulds can solve complex problems and make intelligent decisions, such as navigating mazes or optimizing networks.
- This behavior suggests the presence of a proto-consciousness, allowing them to process information and respond appropriately to their environment.
Concluding Remarks
- Slime moulds demonstrate that minimal cognition can arise in simple organisms without a brain or nervous system.
- Through regulatory mechanisms, slime moulds can interpret their environment, make decisions, and adapt in ways that resemble proto-consciousness.
- These findings offer valuable insights into the basic principles of cognition and the emergence of consciousness in living organisms.