Brain organization, not size alone, as key to high-level vision: Evidence from marmoset monkeys
| Autor: | Alexander J. E. Kell, Elias B. Issa, Sophie L. Bokor, Tahereh Toosi, You-Nah Jeon |
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| Rok vydání: | 2020 |
| Předmět: |
endocrine system
animal structures biology ved/biology media_common.quotation_subject Repertoire ved/biology.organism_classification_rank.species Cognitive neuroscience of visual object recognition Marmoset Cognition Perception biology.animal Biological neural network Primate Model organism Neuroscience media_common |
| Popis: | Bigger brains are thought to support richer abilities, including perceptual abilities. But bigger brains are typically organized differently (e.g., with more cortical areas). Thus, the extent to which a neural system’s size versus organization underlies complex abilities remains unclear. The marmoset monkey is evolutionarily peculiar: it has a small brain, yet many cortical areas. We used this natural experiment to test organization as source of high-level visual abilities independent of size, via large-scale psychophysics comparing marmosets to different species on identical tasks. Marmosets far out—performed rats—a marmoset-sized rodent—on a simple visual recognition task. On another visual task, which is difficult for both humans and machines, marmosets achieved high performance. Strikingly, their image-by-image behavior revealed that they did so in a manner highly similar to humans—marmosets were nearly as human-like as were macaques. These results suggest a key role for brain organization—not simply size—in the evolution of sophisticated abilities. |
| Databáze: | OpenAIRE |
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