Idea Ripper // ArchiveCards: 1555 [Live] | Updated: 2026-10-14
Card #c914IR // #c914Synthesis

A cell that glows brighter may look calmer, not busier, because more sensor soaks up more of its signal. The cells carrying the most sensor can be the ones whose activity looks most muted.

— In our words · Source: An Inconvenient Truth: Calcium Sensors Are Calcium Buffers (Shane M. McMahon & Meyer B. Jackson)

[Use when]

When comparing how “active” different cells or brain areas look in a glowing image.

[Why it matters]

It cuts against instinct. Brightness feels like proof of activity, but here it can mean the opposite, so ranking cells by glow alone can put them in backwards order.

More from An Inconvenient Truth: Calcium Sensors Are Calcium Buffers

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