Central neural coding of sky polarization in insects.

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Central neural coding of sky polarization in insects. / Homberg, Uwe; Heinze, Stanley; Pfeiffer, Keram; Kinoshita, Michiyo; el Jundi, Basil.

In: Philosophical Transactions of the Royal Society B: Biological Sciences, Vol. 366, No. 1565, 2011, p. 680-687.

Research output: Contribution to journalReview article

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Homberg, Uwe ; Heinze, Stanley ; Pfeiffer, Keram ; Kinoshita, Michiyo ; el Jundi, Basil. / Central neural coding of sky polarization in insects. In: Philosophical Transactions of the Royal Society B: Biological Sciences. 2011 ; Vol. 366, No. 1565. pp. 680-687.

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TY - JOUR

T1 - Central neural coding of sky polarization in insects.

AU - Homberg, Uwe

AU - Heinze, Stanley

AU - Pfeiffer, Keram

AU - Kinoshita, Michiyo

AU - el Jundi, Basil

PY - 2011

Y1 - 2011

N2 - Many animals rely on a sun compass for spatial orientation and long-range navigation. In addition to the Sun, insects also exploit the polarization pattern and chromatic gradient of the sky for estimating navigational directions. Analysis of polarization-vision pathways in locusts and crickets has shed first light on brain areas involved in sky compass orientation. Detection of sky polarization relies on specialized photoreceptor cells in a small dorsal rim area of the compound eye. Brain areas involved in polarization processing include parts of the lamina, medulla and lobula of the optic lobe and, in the central brain, the anterior optic tubercle, the lateral accessory lobe and the central complex. In the optic lobe, polarization sensitivity and contrast are enhanced through convergence and opponency. In the anterior optic tubercle, polarized-light signals are integrated with information on the chromatic contrast of the sky. Tubercle neurons combine responses to the UV/green contrast and e-vector orientation of the sky and compensate for diurnal changes of the celestial polarization pattern associated with changes in solar elevation. In the central complex, a topographic representation of e-vector tunings underlies the columnar organization and suggests that this brain area serves as an internal compass coding for spatial directions.

AB - Many animals rely on a sun compass for spatial orientation and long-range navigation. In addition to the Sun, insects also exploit the polarization pattern and chromatic gradient of the sky for estimating navigational directions. Analysis of polarization-vision pathways in locusts and crickets has shed first light on brain areas involved in sky compass orientation. Detection of sky polarization relies on specialized photoreceptor cells in a small dorsal rim area of the compound eye. Brain areas involved in polarization processing include parts of the lamina, medulla and lobula of the optic lobe and, in the central brain, the anterior optic tubercle, the lateral accessory lobe and the central complex. In the optic lobe, polarization sensitivity and contrast are enhanced through convergence and opponency. In the anterior optic tubercle, polarized-light signals are integrated with information on the chromatic contrast of the sky. Tubercle neurons combine responses to the UV/green contrast and e-vector orientation of the sky and compensate for diurnal changes of the celestial polarization pattern associated with changes in solar elevation. In the central complex, a topographic representation of e-vector tunings underlies the columnar organization and suggests that this brain area serves as an internal compass coding for spatial directions.

U2 - 10.1098/rstb.2010.0199

DO - 10.1098/rstb.2010.0199

M3 - Review article

C2 - 21282171

VL - 366

SP - 680

EP - 687

JO - Philosophical Transactions of the Royal Society B: Biological Sciences

JF - Philosophical Transactions of the Royal Society B: Biological Sciences

SN - 1471-2970

IS - 1565

ER -