摘要：SummaryUsing high-resolution diffusion magnetic resonance imaging (dMRI) and a suite of old and new staining techniques, the beginnings of a multi-scale connectome map of the squid brain is erected. The first of its kind for a cephalopod, this includes the confirmation of 281 known connections with the addition of 145 previously undescribed pathways. These and other features suggest a suite of functional attributes, including (1) retinotopic organization through the optic lobes and into other brain areas well beyond that previously recognized, (2) a level of complexity and sub-division in the basal lobe supporting ideas of convergence with the vertebrate basal ganglia, and (3) differential lobe-dependent growth rates that mirror complexity and transitions in ontogeny.Graphical AbstractDisplay OmittedHighlights•The first MRI-based connectome in a cephalopod•Retinotopic organization through the optic lobes and into other brain areas•Subdivided basal lobe system defines topographic information from optic lobes•A new chiasm is proposed to coordinate vision and countershading camouflageBiological Sciences; Neuroscience; Systems Neuroscience
