Failure of interocular transfer in two types of learning in the crab Chasmagnathus

Hermitte, Gabriela; Aggio, Juan; Maldonado, Héctor

doi:10.1007/bf00192426

Cited by 2 publications

(1 citation statement)

References 51 publications

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“…Given their irrelevance, these stimuli must be filtered out to prevent them from interfering with any ongoing task-relevant behaviour, a capacity manifested by the phenomenon of habituation [6]. Despite the importance of habituation, which is widespread among animal species, there is no evidence about the influence of hemispheric specialization on habituation [7][8][9]. Therefore, we took advantage of our knowledge of habituation [10] and lateralization [11] in young domestic chickens (Gallus gallus) and exposed them repeatedly to a visual distracting stimulus while they were feeding binocularly or using one eye only.…”

Section: Introductionmentioning

confidence: 99%

Unlocking the symmetric transfer of irrelevant information: gene–environment interplay and enhanced interhemispheric cross-talk

Chiandetti,

Dissegna,

Rogers

et al. 2023

Biol. Lett.

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Hemispheric specialization influences stimulus processing and behavioural control, affecting responses to relevant stimuli. However, most sensory input is irrelevant and must be filtered out to prevent interference with task-relevant behaviour, a process known as habituation. Despite habituation's vital role, little is known about hemispheric specialization for this brain function. We conducted an experiment with domestic chicks, an elite animal model to study lateralization. They were exposed to distracting visual stimuli while feeding when using binocular or monocular vision. Switching the viewing eye after habituation, we examined if habituation was confined to the stimulated hemisphere or shared across hemispheres. We found that both hemispheres learned equally to ignore distracting stimuli. However, embryonic light stimulation, influencing hemispheric specialization, revealed an asymmetry in interhemispheric transfer of the irrelevant information discarded via habituation. Unstimulated chicks exhibited a directional bias, with the right hemisphere failing to transfer distracting stimulus information to the left hemisphere, while transfer from left to right was possible. Nevertheless, embryonic light stimulation counteracted this asymmetry, enhancing communication from the right to the left hemisphere and reducing the pre-existing imbalance. This sharing extends beyond hemisphere-specific functions and encompasses a broader representation of irrelevant events.

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Section: Introductionmentioning

confidence: 99%

Unlocking the symmetric transfer of irrelevant information: gene–environment interplay and enhanced interhemispheric cross-talk

Chiandetti,

Dissegna,

Rogers

et al. 2023

Biol. Lett.

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Neuronal correlates of the visually elicited escape response of the crab Chasmagnathus upon seasonal variations, stimuli changes and perceptual alterations

Sztarker

Tomsic

2008

J Comp Physiol A

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When confronted with predators, animals are forced to take crucial decisions such as the timing and manner of escape. In the case of the crab Chasmagnathus, cumulative evidence suggests that the escape response to a visual danger stimulus (VDS) can be accounted for by the response of a group of lobula giant (LG) neurons. To further investigate this hypothesis, we examined the relationship between behavioral and neuronal activities within a variety of experimental conditions that affected the level of escape. The intensity of the escape response to VDS was influenced by seasonal variations, changes in stimulus features, and whether the crab perceived stimuli monocularly or binocularly. These experimental conditions consistently affected the response of LG neurons in a way that closely matched the effects observed at the behavioral level. In other words, the intensity of the stimulus-elicited spike activity of LG neurons faithfully reflected the intensity of the escape response. These results support the idea that the LG neurons from the lobula of crabs are deeply involved in the decision for escaping from VDS.

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Failure of interocular transfer in two types of learning in the crab Chasmagnathus

Cited by 2 publications

References 51 publications

Unlocking the symmetric transfer of irrelevant information: gene–environment interplay and enhanced interhemispheric cross-talk

Unlocking the symmetric transfer of irrelevant information: gene–environment interplay and enhanced interhemispheric cross-talk

Neuronal correlates of the visually elicited escape response of the crab Chasmagnathus upon seasonal variations, stimuli changes and perceptual alterations

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