Evripidis Gkanias
Evripidis Gkanias
Home
Publications
Events
Experience
Awards
Projects
Contact
Resumé
Light
Dark
Automatic
navigation
Multimodal skylight information improves the estimation of the celestial compass: insights from a hardware implementation
This is an embedded Microsoft Office presentation, powered by Office Online.
Aug 22, 2023 10:40 AM — Aug 2, 2023 11:00 AM
Bäckaskog Slott, Sweden
Evripidis Gkanias
,
Robert Mitchell
,
Barbara Webb
Celestial compass design mimics the fan-like polarisation filter array of insect eyes
Hardware prototype of the model using a ring of UV-sensitive photodiode pairs, and test it under cloudy and occluded skies.
Evripidis Gkanias
,
Robert Mitchell
,
Jan Stankiewicz
,
Sadeque Khan
,
Srinjoy Mitra
,
Barbara Webb
How the fan-shaped body can integrate differential familiarity for route following in desert ants
We suggest a mechanism that integrates the allocentric velocity of the animal (estimated by the fan-shaped body) and the scene familiarity (estimated by the mushroom body) to a target velocity that drives the behaviour of the animal.
Oct 11, 2022 5:10 PM — 6:45 PM
Janelia Research Campus, VA
Evripidis Gkanias
,
Barbara Webb
How could the mushroom body and central complex combine for visual homing in insects?
We test the performance of the incentive circuit in the visual place recognition task and suggest that the familiarity must increase along a familiar route. Additionally, PCA whitenning and combinatorial encoding techniques enhanced the separability of visual scenes. The familiarity could be used as input to the central complex for visual homing.
Jul 25, 2022 3:00 PM — 6:00 PM
Lisbon, Portugal
Evripidis Gkanias
,
Barbara Webb
Insect-brain inspired neuromorphic nanophotonics
The goal of the project is to develop nanophotonic on-chip devices for integrated sensing and neural computation, inspired by the insect brain.
How do backward-walking ants (Cataglyphis velox) cope with navigational uncertainty?
Backward-walking ants can steer using learnt terrestrial visual cues.
Steering does not require forward body alignment.
Steering may be based on the integration of attractive and repulsive views.
Peeking behaviour is triggered in periods of low directional certainty.
Directional certainty is built on multiple sources of current and past information.
Sebastian Schwarz
,
Leo Clement
,
Evripidis Gkanias
,
Antoine Wystrach
From skylight input to behavioural output: a computational model of the insect polarised light compass
In this talk we present our recent findings of the desert-ants' celestial compass which uses the polarised-light pattern in the sky to estimate its heading direction.
Nov 19, 2019 3:50 PM — 4:15 PM
International Conference Centre, Edinburgh, United Kingdom
Evripidis Gkanias
,
Benjamin Risse
,
Michael Mangan
,
Barbara Webb
Robustness of a model of the insects' celestial compass in realistic conditions
Aug 8, 2019 4:00 PM — 5:00 PM
Bäckaskog Slott, Sweden
Evripidis Gkanias
,
Alina Scaria
,
Natalie A. Vladis
,
Benjamin Risse
,
Michael Mangan
,
Barbara Webb
From skylight input to behavioural output: a computational model of the insect polarised light compass
We propose a new hypothesis for how insects process polarised skylight to extract global orientation information that can be used for accurate path integration. Our model solves the problem of solar-antisolar meridian ambiguity by using a biologically constrained sensor array, and includes methods to deal with tilt and time, providing a complete insect celestial compass output. We analyse the performance of the model using a realistic sky simulation and various forms of disturbances, and compare the results to both engineering approaches and biological data.
Evripidis Gkanias
,
Benjamin Risse
,
Michael Mangan
,
Barbara Webb
Insect neuroethology of reinforcement learning
Thesis - Doctor of Philosophy. I inversigated how insects form associative memories in their mushroom bodies and how this impacts their olfactory learning, visual navigation, and time-delayed reinforcements tasks.
»
Cite
×