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PreprintCC BY-NCbioRxiv

"Spilling-in" versus "Filling-in": Disentangling bottom-up drive from predictive completion in human V1 to V3

  • K. H. Chang1
  • G. M. Boynton
  • I. Fine
  1. 1University of Washington
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Abstract

It is well established that responses in visual areas are a combination of bottom-up stimulus driven input and top-down input driven by expectation. However, it has been difficult to quantify the differential strength of these components, and how they vary across the visual hierarchy. Here, we introduce a method for dissociating bottom-up and top-down contributions in early retinotopic areas (V1-V3). Using a log-scaled bar stimulus, we measured BOLD responses under full-field vs. central scotoma conditions. Using the full-field stimulus, we estimated pRFs in human visual cortex 17 (V1-V3).

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Cite

BibTeXRIS
BibTeX
@misc{chang2026spillingin,
  title = {{"Spilling-in" versus "Filling-in": Disentangling bottom-up drive from predictive completion in human V1 to V3}},
  author = {K. H. Chang and G. M. Boynton and I. Fine},
  howpublished = {bioRxiv},
  year = {2026},
  month = oct,
  doi = {10.64898/2026.10.01.755919},
  url = {https://www.biorxiv.org/content/10.64898/2026.10.01.755919v1},
  note = {CC BY-NC},
}
RIS
TY  - UNPB
TI  - "Spilling-in" versus "Filling-in": Disentangling bottom-up drive from predictive completion in human V1 to V3
AU  - K. H. Chang
AU  - G. M. Boynton
AU  - I. Fine
PY  - 2026
DA  - 2026/10/01
PB  - bioRxiv
DO  - 10.64898/2026.10.01.755919
UR  - https://www.biorxiv.org/content/10.64898/2026.10.01.755919v1
AB  - It is well established that responses in visual areas are a combination of bottom-up stimulus driven input and top-down input driven by expectation. However, it has been difficult to quantify the differential strength of these components, and how they vary across the visual hierarchy. Here, we introduce a method for dissociating bottom-up and top-down contributions in early retinotopic areas (V1-V3). Using a log-scaled bar stimulus, we measured BOLD responses under full-field vs. central scotoma conditions. Using the full-field stimulus, we estimated pRFs in human visual cortex 17 (V1-V3).
ER  -