Dynamic polarization vision in mantis shrimps

Daly, Ilse M.; How, Martin J.; Partridge, Julian C.; Temple, Shelby E.; Marshall, N. Justin; Cronin, Thomas W.; Roberts, Nicholas W.

doi:10.1038/ncomms12140

Cited by 88 publications

(79 citation statements)

References 55 publications

(74 reference statements)

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“…The movement of the eyes was recorded with a calibrated stereoscopic camera pair and tracked using the method described by Daly et al (2016). (B) The experimental set-up for the looming experiment (modified from Daly et al, 2016), which involved presentations of a black circle that rapidly appeared on a CRT monitor. Eye tracking as for A.…”

Section: Methodsmentioning

confidence: 99%

The independence of eye movements in a stomatopod crustacean is task dependent

Daly

How

Partridge

et al. 2017

Journal of Experimental Biology

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Stomatopods have an extraordinary visual system, incorporating independent movement of their eyes in all three degrees of rotational freedom. In this work, we demonstrate that in the peacock mantis shrimp, Odontodactylus scyllarus, the level of ocular independence is task dependent. During gaze stabilization in the context of optokinesis, there is weak but significant correlation between the left and right eyes in the yaw degree of rotational freedom, but not in pitch and torsion. When one eye is completely occluded, the uncovered eye does not drive the covered eye during gaze stabilization. However, occluding one eye does significantly affect the uncovered eye, lowering its gaze stabilization performance. There is a lateral asymmetry, with the magnitude of the effect depending on the eye (left or right) combined with the direction of motion of the visual field. In contrast, during a startle saccade, the uncovered eye does drive a covered eye. Such disparate levels of independence between the two eyes suggest that responses to individual visual tasks are likely to follow different neural pathways.

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Section: Methodsmentioning

confidence: 99%

The independence of eye movements in a stomatopod crustacean is task dependent

Daly

How

Partridge

et al. 2017

Journal of Experimental Biology

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“…The stomatopods also tested in that study for comparison (How et al, 2014) did not exhibit a null point, which is not unexpected considering their various separate and differently oriented 2D systems (Box 1). Alternatively, they could have used a successive approach based on eye stalk rotation (Daly et al, 2016; Land et al, 1990). …”

Section: Searching For Evidence Of E-vector Perceptionmentioning

confidence: 99%

Can invertebrates see the e-vector of polarization as a separate modality of light?

Labhart

2016

Journal of Experimental Biology

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The visual world is rich in linearly polarized light stimuli, which are hidden from the human eye. But many invertebrate species make use of polarized light as a source of valuable visual information. However, exploiting light polarization does not necessarily imply that the electric (e)-vector orientation of polarized light can be perceived as a separate modality of light. In this Review, I address the question of whether invertebrates can detect specific e-vector orientations in a manner similar to that of humans perceiving spectral stimuli as specific hues. To analyze e-vector orientation, the signals of at least three polarization-sensitive sensors (analyzer channels) with different e-vector tuning axes must be compared. The object-based, imaging polarization vision systems of cephalopods and crustaceans, as well as the water-surface detectors of flying backswimmers, use just two analyzer channels. Although this excludes the perception of specific e-vector orientations, a two-channel system does provide a coarse, categoric analysis of polarized light stimuli, comparable to the limited color sense of dichromatic, ‘color-blind’ humans. The celestial compass of insects employs three or more analyzer channels. However, that compass is multimodal, i.e. e-vector information merges with directional information from other celestial cues, such as the solar azimuth and the spectral gradient in the sky, masking e-vector information. It seems that invertebrate organisms take no interest in the polarization details of visual stimuli, but polarization vision grants more practical benefits, such as improved object detection and visual communication for cephalopods and crustaceans, compass readings to traveling insects, or the alert ‘water below!’ to water-seeking bugs.

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“…189 6 led to clear demonstrations of the extraordinary polarization vision of cephalopods and 191 crustaceans How et al, 2012Daly et al, 2016). Careful 192 study of the neuronal processing of skylight polarization cues in insects has led to an 193 improved model for how skylight polarization is interpreted (Pfeiffer & Homberg, 2007;194 Bech et al, 2014) and combined with other orientation cues (el Jundi et al, 2015).…”

Section: Environmental Assessment 164mentioning

confidence: 99%

Polarization Vision—Overcoming Challenges of Working with a Property of Light We Barely See

Foster¹,

Temple

How

et al. 2017

Preprint

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In recent years, the study of polarization vision in animals has seen numerous breakthroughs, not just in terms of what is known about the function of this sensory ability, but also in the experimental methods by which polarization can be controlled, presented and measured. Once thought to be limited to only a few animal species, polarization sensitivity is now known to be widespread across many taxonomic groups, and advances in experimental techniques are, in part, responsible for these discoveries. Nevertheless, its study remains challenging, perhaps because of our own poor sensitivity to the polarization of light, but equally as a result of the slow spread of new practices and methodological innovations within the field. In this review, we introduce the most important steps in designing and calibrating polarized stimuli, within the broader context of areas of current research and the applications of new techniques to key questions. Our aim is to provide a constructive guide to help researchers, particularly those with no background in the physics of polarization, to design robust experiments that are free from confounding factors.

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Dynamic polarization vision in mantis shrimps

Cited by 88 publications

References 55 publications

The independence of eye movements in a stomatopod crustacean is task dependent

The independence of eye movements in a stomatopod crustacean is task dependent

Can invertebrates see the e-vector of polarization as a separate modality of light?

Polarization Vision—Overcoming Challenges of Working with a Property of Light We Barely See

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