
Understanding how the visual system processes and categorizes objects is a fundamental question in neuroscience. This study investigated whether early visual areas encode semantic category information independently of low-level visual features. Using fMRI data from the Kay Natural Images dataset, we focused on V1–V4 and LOC. We explored three binary distinctions: animate vs. inanimate, natural vs. human-made, and face-present vs face-absent. We also included an extended face category encompassing partial and animal faces. To address these questions, we used Representational Similarity Analysis (RSA) and controlled for low-level structure with features from AlexNet's Conv2 layer. Our results revealed that both animacy and the extended face category are represented across early, intermediate, and higher visual areas, independent of low- level visual features. Significant encoding emerged in V2–V4 and LOC, highlighting an early prioritization of evolutionarily relevant information within the visual system.
RSA, MDMR, fMRI, Semantic Categories, Visual Cortex
RSA, MDMR, fMRI, Semantic Categories, Visual Cortex
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 0 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
