Right hemisphere deficits result in difficulty with perceiving irregular smoothly curved surfaces

The right hemisphere allows for the sense of spatial depth, whereas the left understands depth categorically, i.e. above, below. Right hemisphere deficits cause difficulty in dealing with irregular smoothly curved surfaces, such as are characteristic of living things, in three dimensions, even though the capacity to deal with a predictable rectilinear 3D object like a cube is spared. It has been suggested that this problem in dealing with curved volumes may underlie prosopagnosia, and it might be a contributing factor. One of the features Bodamer’s ‘Patient S’ described was, after all, the lack of depth, the reduction of the face to a ‘white oval plate’.

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References

• Mcgilchrist, Iain. (2010). The Master and His Emissary Chapter 2 What Do the Hemispheres Do (p. 160). London, UK: Yale University Press.

Metadata

Type:🔴 Tags: Biology / Neuroscience / Neuropsychology Status:☀️