scholarly journals Motion-in-depth perception and prey capture in the praying mantis Sphodromantis lineola

2019 ◽  
Vol 222 (11) ◽  
pp. jeb198614 ◽  
Author(s):  
Vivek Nityananda ◽  
Coline Joubier ◽  
Jerry Tan ◽  
Ghaith Tarawneh ◽  
Jenny C. A. Read
Keyword(s):  
Depth Perception ◽  
Prey Capture ◽  
Praying Mantis ◽  
Motion In Depth

scholarly journals Motion-in-depth perception and prey capture in the praying mantis

2018 ◽  
Author(s):  
Vivek Nityananda ◽  
Coline Joubier ◽  
Jerry Tan ◽  
Ghaith Tarawneh ◽  
Jenny C A Read
Keyword(s):  
Depth Perception ◽  
Prey Capture ◽  
Radial Motion ◽  
Praying Mantis ◽  
Motion In Depth ◽  
Series Of Experiments

Perceiving motion-in-depth is essential to detecting approaching or receding objects, predators and prey. This can be achieved using several cues, including binocular stereoscopic cues such as changing disparity and interocular velocity differences and monocular cues such as looming. While these have been studied in detail in humans, only looming responses have been well characterized in insects and we know nothing about the role that stereo cues play and how they might interact with looming cues. We used our 3D insect cinema in a series of experiments to investigate the role of the stereo cues mentioned above, as well as looming, in the perception of motion-in-depth during predatory strikes by the praying mantis. Our results show that motion-in-depth does increase the probability of mantis strikes but only for the classic looming stimulus, an expanding luminance edge. Approach indicated by radial motion of a texture or expansion of a motion-defined edge, or by stereoscopic cues, all failed to elicit increased striking. We conclude that mantises use stereopsis to detect depth but not motion-in-depth, which is detected via looming.

The visually controlled prey-capture behaviour of the European mantispid Mantispa styriaca

2000 ◽  
Vol 203 (14) ◽  
pp. 2117-2123 ◽  
Author(s):  
K. Kral ◽  
M. Vernik ◽  
D. Devetak
Keyword(s):  
Visual Angle ◽  
Prey Capture ◽  
Critical Value ◽  
Midsagittal Plane ◽  
Praying Mantis ◽  
Binocular Field ◽  
Video Frames ◽  
Field Of Vision ◽  
Left And Right ◽  
Predatory Insects

Mantispids (Mantispa styriaca) are predatory insects; on bright sunny days, they wait in ambush for insect prey. The prey is captured as soon as it is within reach by means of lightning-speed strikes with the powerful forelegs. The strikes can take less than 60 ms. The mantispid accomplishes this almost as effectively as the larger praying mantis, which occupies a similar habitat, even though the praying mantis has apposition eyes with a high-resolution fovea, whereas the mantispid has unspecialized optical superposition eyes. Mantispa styriaca reacts to an item of prey when the latter covers a critical visual angle. The detection of prey immediately triggers adjustment reactions in the mantispid, which attempts to position the prey item in the visual field of both eyes and in the capture zone. Irrespective of the size of the prey, the capture reaction of the mantispid is always triggered if the distance to the prey falls below a certain critical value. As indicated by the analysis of individual video frames, immediately before an aimed strike, the item of prey is always positioned exactly in the centre of the binocular field of vision in the extended midsagittal plane of the mantispid's head. The strike may be triggered by the ommatidia of the left and right eyes, the lines of sight of which converge precisely on this region. The principal conclusion to be drawn is that the prey-capture behaviour of the mantispid appears to be based on a triangulation mechanism.

scholarly journals Motion in depth perception of strabismic patients

2004 ◽  
Vol 4 (8) ◽  
pp. 464-464
Author(s):  
Y. Watanabe ◽  
M. Tomita ◽  
K. Harasawa ◽  
M. Usui ◽  
S. Shioiri ◽  
...  
Keyword(s):  
Depth Perception ◽  
Motion In Depth

When Texture Takes Precedence over Motion in Depth Perception

Perception ◽  
10.1068/p2955 ◽  
2000 ◽  
Vol 29 (4) ◽  
pp. 437-452 ◽  
Author(s):  
Justin O'Brien ◽  
Alan Johnston
Keyword(s):  
Depth Perception ◽  
Motion In Depth

scholarly journals Response to “An exceptionally preserved 110 million years old praying mantis provides new insights into the predatory behaviour of early mantodeans”

2017 ◽  
Author(s):  
Sydney K. Brannoch ◽  
Gavin J. Svenson
Keyword(s):  
Prey Capture ◽  
Character Evolution ◽  
Predatory Behavior ◽  
Praying Mantis ◽  
Predatory Behaviour ◽  
Extinct Species

Hörnig, Haug, & Haug (2017) published a description of a new specimen of Santanmantis axelrodi MB.I.2068, an extinct species of praying mantis from the Crato Formation of Brazil. According to Hörnig et al. (2017) the discovery of this new specimen brought with it implications for praying mantis character evolution and predatory behavior and it is with these lines of reasoning that we find fault. More specifically, we point to four flawed assumptions in their study that led to their unsubstantiated conclusion that S. axelrodi employed their mesothoracic legs in prey capture.

scholarly journals fMRI reveals S-cone and achromatic contributions to motion-in-depth perception

2017 ◽  
Vol 17 (10) ◽  
pp. 602
Author(s):  
Milena Kaestner ◽  
Ryan Maloney ◽  
Marina Bloj ◽  
Julie Harris ◽  
Alex Wade
Keyword(s):  
Depth Perception ◽  
Motion In Depth

scholarly journals A new method for assessing motion-in-depth perception in strabismic patients

2007 ◽  
Vol 92 (1) ◽  
pp. 47-50 ◽  
Author(s):  
Y Watanabe ◽  
T Kezuka ◽  
K Harasawa ◽  
M Usui ◽  
H Yaguchi ◽  
...  
Keyword(s):  
Depth Perception ◽  
New Method ◽  
Motion In Depth

Head Movements for Depth Perception: Praying Mantis versus Pigeon

2005 ◽  
Vol 18 (1) ◽  
pp. 21-42 ◽  
Author(s):  
Alfred Bruckstein ◽  
Robert J. Holt ◽  
Igor Katsman ◽  
Ehud Rivlin
Keyword(s):  
Depth Perception ◽  
Head Movements ◽  
Praying Mantis
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