Do pigeons perceive the motion aftereffect? A behavioral study

Xiao, Qian; Güntürkün, Onur

doi:10.1016/j.bbr.2007.09.026

Cited by 6 publications

(2 citation statements)

References 52 publications

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“…Again mentioning just a few areas of research, these studies examined, e.g. color perception [23], optic illusions [24] and magnetoperception [25]. Awake functional MRI of pigeons would allow many of these 'learning and memory' scientific experiments while simultaneously looking at activity of the whole brain.…”

Section: Introductionmentioning

confidence: 99%

Functional MRI and functional connectivity of the visual system of awake pigeons

Groof

Jonckers

Güntürkün

et al. 2013

Behavioural Brain Research

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h i g h l i g h t sFirst study to image the whole brain of awake pigeons. We show a habituation program for MR-sessions under awake and head-fixed conditions. Movement under these conditions is minimal. First measurement of functional connectivity in a non-mammalian species. Analyses of BOLD-response and functional connectivity are feasible. a r t i c l e i n f o b s t r a c tAt present, functional MRI (fMRI) is increasingly used in animal research but the disadvantage is that the majority of the imaging is applied in anaesthetized animals. Only a few articles present results obtained in awake rodents. In this study both traditional fMRI and resting state (rsfMRI) were applied to four pigeons, that were trained to remain still while being imaged, removing the need for anesthesia. This is the first time functional connectivity measurements are performed in a non-mammalian species. Since the visual system of pigeons is a well-known model for brain asymmetry, the focus of the study was on the neural substrate of the visual system. For fMRI a visual stimulus was used and functional connectivity measurements were done with the entopallium (E; analog for the primary visual cortex) as a seed region. Interestingly in awake pigeons the left E was significantly functionally connected to the right E. Moreover we compared connectivity maps for a seed region in both hemispheres resulting in a stronger bilateral connectivity starting from left E then from right E. These results could be used as a starting point for further imaging studies in awake birds and also provide a new window into the analysis of hemispheric dominance in the pigeon.

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Section: Introductionmentioning

confidence: 99%

Functional MRI and functional connectivity of the visual system of awake pigeons

Groof

Jonckers

Güntürkün

et al. 2013

Behavioural Brain Research

View full text Add to dashboard Cite

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“…The literature reported motion after effects (small misperceptions of motion induced by prior exposure to opposite direction motion) or illusory reversal in motion direction due to flicker in different animals (mammals, birds and insects)25262728, but these effects can also be explained in humans without complex cortical elaboration. On the contrary, the global illusory motion experienced, for example, in the Rotating Snakes illusion (RSI)13 is a very different effect.…”

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confidence: 99%

Do Fish Perceive Illusory Motion?

Gori

Agrillo

Dadda

et al. 2014

Sci Rep

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Motion illusion refers to a perception of motion that is absent or different in the physical stimulus. These illusions are a powerful non-invasive tool for understanding the neurobiology of vision because they tell us, indirectly, how we process motion. There is general agreement in ascribing motion illusion to higher-level processing in the visual cortex, but debate remains about the exact role of eye movements and cortical networks in triggering it. Surprisingly, there have been no studies investigating global illusory motion evoked by static patterns in animal species other than humans. Herein, we show that fish perceive one of the most studied motion illusions, the Rotating Snakes. Fish responded similarly to real and illusory motion. The demonstration that complex global illusory motion is not restricted to humans and can be found even in species that do not have a cortex paves the way to develop animal models to study the neurobiological bases of motion perception.

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A 3-dimensional digital atlas of the ascending sensory and the descending motor systems in the pigeon brain

et al. 2012

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Pigeons are classic animal models for learning, memory, and cognition. The majority of the current understanding about avian neurobiology outside of the domain of the song system has been established using pigeons. Since MRI represents an increasingly relevant tool for comparative neuroscience, a 3-dimensional MRI-based atlas of the pigeon brain becomes essential. Using multiple imaging protocols, we delineated diverse ascending sensory and descending motor systems as well as the hippocampal formation. This pigeon brain atlas can easily be used to determine the stereotactic location of identified neural structures at any angle of the head. In addition, the atlas is useful to find the optimal angle of sectioning for slice experiments, stereotactic injections and electrophysiological recordings. This pigeon brain atlas is freely available for the scientific community.

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Do pigeons perceive the motion aftereffect? A behavioral study

Cited by 6 publications

References 52 publications

Functional MRI and functional connectivity of the visual system of awake pigeons

Functional MRI and functional connectivity of the visual system of awake pigeons

Do Fish Perceive Illusory Motion?

A 3-dimensional digital atlas of the ascending sensory and the descending motor systems in the pigeon brain

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