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Fig. 8. Ion channels alter the relationship between energy consumption and
information coding. Drosophila melanogaster photoreceptors from
Shaker mutant flies, which lack functional Shaker
K+ channels (red), have an increased energetic cost at rest and
whilst signalling when compared to wild-type photoreceptors (black). Adapted
from Niven et al. (Niven et al.,
2003a).