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The Scaling of Metabolic Cost with Performance in Dipteran R1–6 Photoreceptors
The logarithms of the total cost (open symbols) and the fixed cost (solid
symbols) are plotted against the logarithm of maximum information rate.
Costs are in ATP molecules hydrolysed per photoreceptor per second.
Each data point represents the mean values from R1–6 photoreceptors in
one of the four dipteran species used in this study. The linear fits suggest
that the total cost of photoreceptor signalling (dashed line) increases as
(information rate)^1.7, and the fixed cost of maintaining the photoreceptor in the dark (solid line) increases as (information rate)^1.47.
From:
Niven JE, Anderson JC, Laughlin SB
Fly photoreceptors demonstrate energy-information trade-offs in neural coding
PLoS Biol 5: 828-840 (2007)
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