Researchers Might Have Uncovered the Reason for Our Consciousness

Recent investigations have explored why advanced consciousness developed in some species but not others. Two studies provide fresh perspectives on this enduring mystery.

The first study introduces the ALARM theory, proposed by philosophers Albert Newen and Carlos Montemayor. According to this framework, consciousness emerges in three stages: basic arousal, general alertness, and reflexive self-awareness. Basic arousal allows organisms to react to potential threats, essentially putting them in a heightened state of alert. General alertness enables learning of simple and complex correlations, such as associating smoke with fire or understanding scientific relationships. Reflexive self-awareness represents the most sophisticated stage, where an individual perceives itself in relation to past and future events.

The second study, led by neuroscientists Onur Gntrkn and Gianmarco Maldarelli, examined consciousness in birds. Despite having a brain structure unlike humans, birds demonstrate significant cognitive abilities. Instead of a prefrontal cortex, birds possess a nidopallium caudolaterale (NCL), a highly connected brain region capable of integrating and processing information flexibly. The study highlights that even common birds, such as pigeons and chickens, show measurable levels of consciousness.

In one experiment, roosters were tested to see if they could distinguish themselves from others. When exposed to the shadow of a predator, a rooster warned a nearby conspecific but remained silent when alone. However, when a mirror replaced the barrier, the rooster did not warn the bird on the other side, suggesting an ability to differentiate itself from others of its species.

The findings suggest that consciousness is not exclusive to humans or closely related mammals. Instead, it appears as a graded, multidimensional phenomenon present across diverse species with different brain architectures. These insights challenge the notion that consciousness is an all-or-nothing trait and highlight its evolutionary complexity.

Author Commentary: Consciousness Beyond Human Boundaries

The recent studies underscore a critical shift in our understanding of consciousness. The ALARM theory, introduced by Albert Newen and Carlos Montemayor, offers a clear framework, breaking consciousness into arousal, alertness, and reflexive self-awareness. This staged model emphasizes that basic responsiveness can exist without full self-awareness, highlighting a spectrum rather than a binary presence of consciousness.

Equally important is the work on avian cognition by Onur Güntürkün and Gianmarco Maldarelli. Birds, despite lacking a human-like prefrontal cortex, demonstrate advanced cognitive capacities via the nidopallium caudolaterale (NCL). Experiments with roosters reveal behavioral evidence of self-other differentiation, suggesting that even common birds possess a measurable form of consciousness.

Combined, these studies challenge long-standing assumptions that consciousness is unique to humans or primates. The emerging view presents consciousness as a graded, multidimensional phenomenon shaped by evolution, adaptable across varying neural architectures. These findings prompt a reconsideration of how we define and measure conscious experience in non-human species.

Sources:

• Scientists May Have Discovered Why We Gained Consciousness