Daily Neuroscience for 02 May follows 4 stories from r/neuro and r/neuroscience, moving through brain categories, forehead e tattoo, nanoplastic mitochondria, effective connectivity.

1. Brain Categories

This story is about how the brain decides that something belongs to a category, and the source is Nautilus. The post points to a conversation about how we recognize a cat as a cat, and it frames that question through categories, folk psychology, beginner’s mind, and the difference between fast and slow thinking.

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2. Forehead E Tattoo

This story is about a Nature report on a forehead e-tattoo that can estimate mental strain by tracking brain and eye activity. The device is described as a thin, temporary sticker with adhesive electrodes that sits on the forehead and records signals without needing a bulky headset.

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3. Nanoplastic Mitochondria

A ScienceDirect post points to a study on polystyrene nanoplastics and how they affect brain mitochondria. The paper suggests these particles can interfere with electron transport chain complexes, which are central to cellular energy production.

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4. Effective Connectivity

A NeuroImage paper on ScienceDirect looks at structurally constrained effective brain connectivity, using anatomy to help estimate directed influences between brain regions. The study proposes an autoregressive model that is limited by structural connectivity, then checks whether that model can recover useful effective connections.

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That’s it for today’s Daily Neuroscience.