Home > Papers from 2011 > Using texture information in ‘snapshots’

Using texture information in ‘snapshots’

We all know the basic idea behind snapshot models, where some form of retinotopic information is stored from the perspective of a goal location to which the insect wants to return. However, it is not clear what information should make up a snapshot. Dittmar et al have been investigating this question with honeybees. In a previous paper they suggested that motion parallax information might be stored in a snapshot. Here they show that textural information is also important to bees. In a classical experiment, the position of a feeder is defined by three landmarks. In key tests, bees that had trained with the landmark closest to the feeder having a unique texture, would ‘follow’ that landmark and search close to it – even when it had a new position within the landmark array. At first glance this suggests that landmarks are labelled with texture information. However, modelling shows that this pattern of behaviour might also emerge from a global (pixel by pixel) image matching strategy which doesn’t segregate the world into labelled landmarks. So we are learning lots about what information is preserved by the bees, but there are still open questions about how this information is used.

Dittmar, Egelhaaf, Sturzl ,Boeddeker (2011) The behavioural relevance of landmark texture for honeybee homing. Frontiers in Behavioral Neuroscience, 5

Categories: Papers from 2011
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