CONSCIOUSNESS-SEQUENCE OF EVOLUTION

From NeuroRehab.wiki

SUMMARY

1. ATTENTION:goal-directed movement (e.g. towards food and away from danger)[1][2][3].

2. PERCEPTION/PRAXIS:tools to perceive the environment at a distance (e.g. vision), the ability to organize, process, and interpret incoming visual & tactile-kinesthetic information to create an inner representation of the world[4][5][6].

3. MEMORY:allows animals to continue looking for food even beyond their sensory range, circumvent distractions[7].

3A. Object permanence: our awareness that things continue to exist even when we can't see them; human babies develop this at approx. 8 mths, chickens show this within 1-2 days of birth[8][9].

3B. Time sense: allows us to look forward from the present moment and anticipate the future, allows for delayed gratification[10][11][12].

4. EXECUTIVE FUNCTION: allows more complex goal directed and purposeful behaviour, to anticipate the consequences of actions & to understand others[13][14].

5. LANGUAGE:allows communication, representation of what is absent, hypothesise, collaborate with others on detailed plans, and allows greater abstraction[15][16][17]
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Reference(s)

  1. Mashour, G. and Alkire, M., 2013. Evolution of consciousness: Phylogeny, ontogeny, and emergence from general anesthesia. Proceedings of the National Academy of Sciences, 110(Supplement_2), pp.10357-10364.
  2. En.wikipedia.org. 2021. Girardia tigrina: Wikipedia. [online] Available at: [Accessed 20 December 2021].
  3. Sheiman, I. & Zubina, E. & Kreshchenko, Natalia. (2002). Regulation of the Feeding Behavior of the Planarian Dugesia (Girardia) tigrina. Journal of Evolutionary Biochemistry and Physiology. 38. 414-418. 10.1023/A:1021149803009.
  4. Feinberg, T. and Mallatt, J., 2013. The evolutionary and genetic origins of consciousness in the Cambrian Period over 500 million years ago. Frontiers in Psychology, 4.
  5. Hazlehurst, K. and Hendry, L., 2021. Eyes on the prize: the evolution of vision. [online] Nhm.ac.uk. Available at: [Accessed 20 December 2021].
  6. Press release. NobelPrize.org. Nobel Prize Outreach AB 2021. Mon. 20 Dec 2021. Available at:
  7. Klein, S., Cosmides, L., Tooby, J. and Chance, S., 2002. Decisions and the evolution of memory: Multiple systems, multiple functions. Psychological Review, 109(2), pp.306-329.
  8. Dictionary.apa.org. 2021. APA Dictionary of Psychology. [online] Available at: [Accessed 21 December 2021].
  9. Marino, L. Thinking chickens: a review of cognition, emotion, and behavior in the domestic chicken. Anim Cogn 20, 127-147 (2017). https://doi.org/10.1007/s10071-016-1064-4.
  10. Plato.stanford.edu. 2021. Temporal Consciousness (Stanford Encyclopedia of Philosophy). [online] Available at: [Accessed 21 December 2021].
  11. Abeyesinghe, S., Nicol, C., Hartnell, S. and Wathes, C., 2005. Can domestic fowl, Gallus gallus domesticus, show self-control?. Animal Behaviour, 70(1), pp.1-11.
  12. Raby, C & Alexis, D & Dickinson, Anthony & Clayton, N. (2007). Planning for the Future by Western Scrub-Jays. Nature. 445. 919-21. 10.1038/nature05575.
  13. de Kort, Selvino & Correia, Sérgio & Alexis, Dean & Dickinson, Anthony & Clayton, Nicola. (2007). The Control of Food-Caching Behavior by Western Scrub-Jays (Aphelocoma californica). Journal of experimental psychology. Animal behavior processes. 33. 361-70. 10.1037/0097-7403.33.4.361.
  14. Clayton NS, Dally JM, Emery NJ. Social cognition by food-caching corvids. The western scrub-jay as a natural psychologist. Philos Trans R Soc Lond B Biol Sci. 2007 Apr 29;362(1480):507-22. doi: 10.1098/rstb.2006.1992. PMID: 17309867; PMCID: PMC2346514.
  15. Nowak, M. and Krakauer, D., 1999. The evolution of language. Proceedings of the National Academy of Sciences, 96(14), pp.8028-8033.
  16. Branan, N., 2009. Reading Minds. Scientific American Mind, 20(6), pp.8-8.
  17. Benítez-Burraco, A., 2021. How the Language We Speak Affects the Way We Think. [online] Psychology Today. Available at: [Accessed 21 December 2021].


Cifu, D.X. (2020). Braddom’s physical medicine and rehabilitation. Elsevier. Get it on Amazon.
Cuccurullo, S. (2019). Physical medicine and rehabilitation board review. New York: Demosmedical. Get it on Amazon.
O’Young, B., Young, M.A. and Stiens, S.A. (2008). Physical Medicine and Rehabilitation Secrets. Mosby. Get it on Amazon.