Branches of Philosophy Podcast · Philosophy Cognitive Science

[211] Materialist Phenomenology: A Philosophy of Perception By Manuel DeLanda

·1 hr 3 min·4 clips

Natural signs, indices, and icons let the world carry information before any interpreter arrives.

The episode comes back to the plain question of how seeing works. That ease is treated as deceptive, because the brain, the body, and the world all have to line up before experience feels immediate. Substance dualism appears as the familiar habit of splitting mind from body. Manuel de Landa's *Materialist Phenomenology* then comes in as a direct challenge to that habit. The hosts keep the pace brisk and clear. They do not leave the listener stranded in abstraction. Internal physiological states become a major building block. The episode describes the brain as continuously monitoring hunger, thirst, blood pressure, heart rate, and temperature. Those signals are tied to basic feelings and emotions. The discussion then asks how the brain organizes that information. Body maps enter the picture. The familiar homunculus image shows how different body parts take up different amounts of cortical real estate. The show is careful to note that these maps are not signs themselves. They are physical structures that can hold signs. The vehicle of the sign is the activation pattern on the map. That detail leads into a sharper contrast between body image and body schema. Body image is the body as an object, the outside view you get through visual proprioception, like seeing your limbs or seeing yourself in a mirror. Body schema is the lived, first-person sense of bodily structure, rooted in somatic proprioception. Somatic illusion is used to test that distinction, including the example of vibrating a tendon so a limb feels longer than it is. Receptive fields widen the frame again, and the closing question asks how much of the coherent, autobiographical self is a story the mind builds after the fact.

As heard by us

A clear take on how the body shapes perception.

Manuel de Landa's Materialist Phenomenology gives the piece a clear frame: perception is not just seeing, but the body taking in and sorting itself.

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Why you'd press play

Your guide to perception, body maps, and the story your self tells.

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