L' attention sélective chez la libellule

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey.

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

The discovery, to be published online today in the journal Current Biology, is the first evidence that an invertebrate animal has brain cells for selective attention, which has so far only been demonstrated in primates. Dr Steven Wiederman and Associate Professor David O'Carroll from the University of Adelaide's Centre for Neuroscience Research have been studying insect vision for many years. Using a tiny glass probe with a tip that is only 60 nanometers wide - 1500 times smaller than the width of a human hair - the researchers have discovered neuron activity in the dragonfly's brain that enables this selective attention. They found that when presented with more than one visual target, the dragonfly brain cell 'locks on' to one target and behaves as if the other targets don't exist.

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

The discovery, to be published online today in the journal Current Biology, is the first evidence that an invertebrate animal has brain cells for selective attention, which has so far only been demonstrated in primates. Dr Steven Wiederman and Associate Professor David O'Carroll from the University of Adelaide's Centre for Neuroscience Research have been studying insect vision for many years. Using a tiny glass probe with a tip that is only 60 nanometers wide - 1500 times smaller than the width of a human hair - the researchers have discovered neuron activity in the dragonfly's brain that enables this selective attention. They found that when presented with more than one visual target, the dragonfly brain cell 'locks on' to one target and behaves as if the other targets don't exist.

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCpf

Odonata

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

Selective attention in dragonflies

In a discovery that may prove important for cognitive science, our understantding of Nature and aplications for robot vision, researchers at the Univerity of Adelaïde have found evidence that the dragonfly is capable of hight level thought processes when it hunts.

To read more, follow the link HERE.

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision,

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

Une découverte importante pour la science cognitive vient d'être réalisée dans le domaine de notre compréhension de la nature et de ses applications en matière de vision des robots.

Des chercheurs à l'Université d'Adelaide viennent de trouver la preuve que la libellule est capable d'avoir un processus de pensée bien plus élevé qu'on ne le pensait quand elle chasse une proie.
Elle possède donc des cellules cérébrales pour une attention sélective, ce qui n'a été démontré jusqu'ici que chez les primates.
 

 

 

Dr Steven Wiederman et son associé le  Professeur David O'Carroll (de l'Université du Centre d'Adelaide de la Recherche de Neuroscience) ont étudié la vision des insectes depuis de nombreuses années.

En utilisant une sonde minuscule en verre, dont le bout fait seulement 60 nanomètres de diamètre (1500 fois plus petit que la largeur de cheveux humains), les chercheurs ont découvert une activité neuronale dans le cerveau de la libellule qui lui permet cette attention sélective.
Ils se sont aperçu que la cellule de son cerveau se fixe alors sur une seule cible et elle se comporte comme si les autres cibles n'existaient pas.

Voir la vidéo ci-après qui en montre une en train de chercher une proie et se focaliser dessus une fois repérée, ignorant toutes les autres.
On la voit même réaligner son corps vers sa cible.

Elles sont capables d'en choisir une seule, même dans un essaim entier d'insectes, et de se tenir à celle-ci très précisément.

This is a video in the field showing a dragonfly on the hunt for prey -- shown at normal speed and then in slow motion. The dragonfly hovers while it searches for prey, moving its head and then repositioning its body, ready to pursue a target. When a target is identified (in this case a small fly), the dragonfly locks on and ignores all other potential targets. It swoops up and catches its prey. Credit: Associate Professor David O'Carroll, University of Adelaide. "Selective attention is fundamental to humans' ability to select and respond to one sensory stimulus in the presence of distractions," Dr Wiederman says. "Imagine a tennis player having to pick out a small ball from the crowd when it's traveling at almost 200kms an hour - you need selective attention in order to hit that ball back into play. "Precisely how this works in biological brains remains poorly understood, and this has been a hot topic in neuroscience in recent years," he says. "The dragonfly hunts for other insects, and these might be part of a swarm - they're all tiny moving objects. Once the dragonfly has selected a target, its neuron activity filters out all other potential prey. The dragonfly then swoops in on its prey - they get it right 97% of the time." Associate Professor O'Carroll says this brain activity makes the dragonfly a more efficient and effective predator. "What's exciting for us is that this is the first direct demonstration of something akin to selective attention in humans shown at the single neuron level in an invertebrate," Associate Professor O'Carroll says. "Recent studies reveal similar mechanisms at work in the primate brain, but you might expect it there. We weren't expecting to find something so sophisticated in lowly insects from a group that's been around for 325 million years. "We believe our work will appeal to neuroscientists and engineers alike. For example, it could be used as a model system for robotic vision. Because the insect brain is simple and accessible, future work may allow us to fully understand the underlying network of neurons and copy it into intelligent robots," he says. Journal reference: Current Biology search and more info website Provided by University of Adelaide

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

Ce qui semble évident pour les mammifères l'est beaucoup moins chez les invertébrés et les chercheurs ont été très surpris de découvrir ce phénomène chez des insectes qui vivent sur la planète depuis 325 millions d'années!

 La fonctionalité très succincte des neurones de libellule permettant une compréhension simplifiée elle pourra être facilement copiée pour l'ingénierie de la robotique.

The video

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

"What's exciting for us is that this is the first direct demonstration of something akin to selective attention in humans shown at the single neuron level in an invertebrate," Associate Professor O'Carroll says. "Recent studies reveal similar mechanisms at work in the primate brain, but you might expect it there. We weren't expecting to find something so sophisticated in lowly insects from a group that's been around for 325 million years. "We believe our work will appeal to neuroscientists and engineers alike. For example, it could be used as a model system for robotic vision. Because the insect brain is simple and accessible, future work may allow us to fully understand the underlying network of neurons and copy it into intelligent robots," he says.

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

This is a video in the field showing a dragonfly on the hunt for prey -- shown at normal speed and then in slow motion. The dragonfly hovers while it searches for prey, moving its head and then repositioning its body, ready to pursue a target. When a target is identified (in this case a small fly), the dragonfly locks on and ignores all other potential targets. It swoops up and catches its prey. Credit: Associate Professor David O'Carroll, University of Adelaide. "Selective attention is fundamental to humans' ability to select and respond to one sensory stimulus in the presence of distractions," Dr Wiederman says. "Imagine a tennis player having to pick out a small ball from the crowd when it's traveling at almost 200kms an hour - you need selective attention in order to hit that ball back into play. "Precisely how this works in biological brains remains poorly understood, and this has been a hot topic in neuroscience in recent years," he says. "The dragonfly hunts for other insects, and these might be part of a swarm - they're all tiny moving objects. Once the dragonfly has selected a target, its neuron activity filters out all other potential prey. The dragonfly then swoops in on its prey - they get it right 97% of the time." Associate Professor O'Carroll says this brain activity makes the dragonfly a more efficient and effective predator. "What's exciting for us is that this is the first direct demonstration of something akin to selective attention in humans shown at the single neuron level in an invertebrate," Associate Professor O'Carroll says. "Recent studies reveal similar mechanisms at work in the primate brain, but you might expect it there. We weren't expecting to find something so sophisticated in lowly insects from a group that's been around for 325 million years. "We believe our work will appeal to neuroscientists and engineers alike. For example, it could be used as a model system for robotic vision. Because the insect brain is simple and accessible, future work may allow us to fully understand the underlying network of neurons and copy it into intelligent robots," he says. Journal reference: Current Biology search and more info website Provided by University of Adelaide

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

Using a tiny glass probe with a tip that is only 60 nanometers wide - 1500 times smaller than the width of a human hair - the researchers have discovered neuron activity in the dragonfly's brain that enables this selective attention. They found that when presented with more than one visual target, the dragonfly brain cell 'locks on' to one target and behaves as if the other targets don't exist.

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey. Ads by Google Notary Publics - All Kinds Of Notary Services Available. Contact Us Today! - www.savillenotaries.com The discovery, to be published online today in the journal Current Biology, is the first evidence that an invertebrate animal has brain cells for selective attention, which has so far only been demonstrated in primates. Dr Steven Wiederman and Associate Professor David O'Carroll from the University of Adelaide's Centre for Neuroscience Research have been studying insect vision for many years. Using a tiny glass probe with a tip that is only 60 nanometers wide - 1500 times smaller than the width of a human hair - the researchers have discovered neuron activity in the dragonfly's brain that enables this selective attention. They found that when presented with more than one visual target, the dragonfly brain cell 'locks on' to one target and behaves as if the other targets don't exist.

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey. Ads by Google Notary Publics - All Kinds Of Notary Services Available. Contact Us Today! - www.savillenotaries.com The discovery, to be published online today in the journal Current Biology, is the first evidence that an invertebrate animal has brain cells for selective attention, which has so far only been demonstrated in primates. Dr Steven Wiederman and Associate Professor David O'Carroll from the University of Adelaide's Centre for Neuroscience Research have been studying insect vision for many years. Using a tiny glass probe with a tip that is only 60 nanometers wide - 1500 times smaller than the width of a human hair - the researchers have discovered neuron activity in the dragonfly's brain that enables this selective attention. They found that when presented with more than one visual target, the dragonfly brain cell 'locks on' to one target and behaves as if the other targets don't exist.

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey. Ads by Google Notary Publics - All Kinds Of Notary Services Available. Contact Us Today! - www.savillenotaries.com The discovery, to be published online today in the journal Current Biology, is the first evidence that an invertebrate animal has brain cells for selective attention, which has so far only been demonstrated in primates. Dr Steven Wiederman and Associate Professor David O'Carroll from the University of Adelaide's Centre for Neuroscience Research have been studying insect vision for many years. Using a tiny glass probe with a tip that is only 60 nanometers wide - 1500 times smaller than the width of a human hair - the researchers have discovered neuron activity in the dragonfly's brain that enables this selective attention. They found that when presented with more than one visual target, the dragonfly brain cell 'locks on' to one target and behaves as if the other targets don't exist.

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey. Ads by Google Notary Publics - All Kinds Of Notary Services Available. Contact Us Today! - www.savillenotaries.com The discovery, to be published online today in the journal Current Biology, is the first evidence that an invertebrate animal has brain cells for selective attention, which has so far only been demonstrated in primates. Dr Steven Wiederman and Associate Professor David O'Carroll from the University of Adelaide's Centre for Neuroscience Research have been studying insect vision for many years. Using a tiny glass probe with a tip that is only 60 nanometers wide - 1500 times smaller than the width of a human hair - the researchers have discovered neuron activity in the dragonfly's brain that enables this selective attention. They found that when presented with more than one visual target, the dragonfly brain cell 'locks on' to one target and behaves as if the other targets don't exist.

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey. Ads by Google Notary Publics - All Kinds Of Notary Services Available. Contact Us Today! - www.savillenotaries.com The discovery, to be published online today in the journal Current Biology, is the first evidence that an invertebrate animal has brain cells for selective attention, which has so far only been demonstrated in primates. Dr Steven Wiederman and Associate Professor David O'Carroll from the University of Adelaide's Centre for Neuroscience Research have been studying insect vision for many years. Using a tiny glass probe with a tip that is only 60 nanometers wide - 1500 times smaller than the width of a human hair - the researchers have discovered neuron activity in the dragonfly's brain that enables this selective attention. They found that when presented with more than one visual target, the dragonfly brain cell 'locks on' to one target and behaves as if the other targets don't exist.

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey. Ads by Google Notary Publics - All Kinds Of Notary Services Available. Contact Us Today! - www.savillenotaries.com The discovery, to be published online today in the journal Current Biology, is the first evidence that an invertebrate animal has brain cells for selective attention, which has so far only been demonstrated in primates. Dr Steven Wiederman and Associate Professor David O'Carroll from the University of Adelaide's Centre for Neuroscience Research have been studying insect vision for many years. Using a tiny glass probe with a tip that is only 60 nanometers wide - 1500 times smaller than the width of a human hair - the researchers have discovered neuron activity in the dragonfly's brain that enables this selective attention. They found that when presented with more than one visual target, the dragonfly brain cell 'locks on' to one target and behaves as if the other targets don't exist.

Read more at: http://phys.org/news/2012-12-dragonflies-human-like-attention.html#jCp