Blog

Here you can find link to the poster:

PDF

Work on this project has been funded by the Ministry of Science and Higher Education (Poland) research Grant DI2018 010448 as part of “Diamentowy Grant” program.

Readable size references:

Filimon, F. (2015). Are All Spatial Reference Frames Egocentric? https://doi.org/10.3389/fnhum.2015.00648

Grush, R. (2004). The emulation theory of representation.

Grush, R. (2007). Skill theory v2.0. https://doi.org/10.1007/s11229-007-9236-z

Hohwy, J. (2020). New directions in predictive processing. https://doi.org/10.1111/mila.12281

Laflaquière, A., & Garcia Ortiz, M. (2019). Unsupervised emergence of egocentric spatial structure from sensorimotor prediction. https://arxiv.org/abs/1906.01401

Moser, E. I., Kropff, E., & Moser, M.-B. (2008). Place Cells, Grid Cells, and the Brain’s Spatial Representation System. https://doi.org/10.1146/annurev.neuro.31.061307.090723

Pouget, A., Deneve, S., & Duhamel, J.-R. (2002). A computational perspective on the neural basis of multisensory spatial representations. https://doi.org/10.1038/nrn914

Rorot, W. (2020). Explaining “spatial purport of perception”. https://doi.org/10.1007/s11229-020-02678-0

Wydmuch, M., Kempka, M., & Jaśkowski, W. (2018). ViZDoom competitions: Playing doom from pixels. https://arxiv.org/abs/1809.03470

Here you can find link to the poster:

PDF

Readable size references:

Filimon, F. (2015). Are All Spatial Reference Frames Egocentric? https://doi.org/10.3389/fnhum.2015.00648

Grush, R. (2004). The emulation theory of representation.

Grush, R. (2007). Skill theory v2.0. https://doi.org/10.1007/s11229-007-9236-z

Hohwy, J. (2020). New directions in predictive processing. https://doi.org/10.1111/mila.12281

Laflaquière, A., & Garcia Ortiz, M. (2019). Unsupervised emergence of egocentric spatial structure from sensorimotor prediction. https://arxiv.org/abs/1906.01401

Moser, E. I., Kropff, E., & Moser, M.-B. (2008). Place Cells, Grid Cells, and the Brain’s Spatial Representation System. https://doi.org/10.1146/annurev.neuro.31.061307.090723

Pouget, A., Deneve, S., & Duhamel, J.-R. (2002). A computational perspective on the neural basis of multisensory spatial representations. https://doi.org/10.1038/nrn914

Rorot, W. (2020). Explaining “spatial purport of perception”. https://doi.org/10.1007/s11229-020-02678-0

Wydmuch, M., Kempka, M., & Jaśkowski, W. (2018). ViZDoom competitions: Playing doom from pixels. https://arxiv.org/abs/1809.03470

Last week my first paper (!) finally came out in Synthese, you can read it here. The paper synthesizes the initial theoretical research of my project on space perception, focusing on phenomenological aspects that Rick Grush termed “spatial purport” of perceptual experience (Grush 2007).

Space perception has been widely studied in the context of allocentric frame of reference (think O’Keefe, Moser & Moser, place cells, hippocampus), however egocentric space perception differs significantly in that it is multimodal, closely tied to action, doesn’t have topographic structure, and ties closely with phenomenal experience of space. Grush offered a high-level model of spatial purport, however this model: a) was never explicitly tested and b) discards a significant part of spatial purport - experience of object-motions (motions induced by sources external to the perceiving subject). In the paper, I analyze the concept of “spatial purport” that Grush left largely underspecified, and show how basic aspect of experience of the world it is (and how it can be usefully operationalized for the purpose of future studies). Then I proceed to use insights from predictive processing to offer a novel extension of Grush’s skill theory, which takes my criticism (most significantly the issue of object-motions) into account. The model is a high-level proposal, but spelled out in formal terms which should enable its computational and empirical examination. My main project now is to develop simulations to compare the operation of Grush’s ST2.0 and the PHiST, and I will be posting here once there is some progress and results.

Test MathJax: When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are \(x = {-b \pm \sqrt{b^2-4ac} \over 2a}.\)