Mark Roper
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View article: A neuromorphic model of active vision shows how spatiotemporal encoding in lobula neurons can aid pattern recognition in bees
A neuromorphic model of active vision shows how spatiotemporal encoding in lobula neurons can aid pattern recognition in bees Open
Bees’ remarkable visual learning abilities make them ideal for studying active information acquisition and representation. Here, we develop a biologically inspired model to examine how flight behaviours during visual scanning shape neural …
View article: Interlaboratory study of the quality of water vapor sorption data for wood from automated sorption balances
Interlaboratory study of the quality of water vapor sorption data for wood from automated sorption balances Open
Automated sorption balances are widely used for characterizing the interaction of water vapor with hygroscopic materials. This paper is part of an interlaboratory study investigating the stability and performance of automated sorption bala…
View article: Active vision of bees in a simple pattern discrimination task
Active vision of bees in a simple pattern discrimination task Open
Active vision, the sensory-motor process through which animals dynamically adjust visual input to sample and prioritise relevant information via photoreceptors, eyes, head, and body movements, is well-documented across species. In small-br…
View article: Water vapor absorption data for western larch (Larix occidentalis Nutt.): Results of a worldwide interlaboratory study
Water vapor absorption data for western larch (Larix occidentalis Nutt.): Results of a worldwide interlaboratory study Open
Automated sorption balances are widely used for characterizing the interaction of water vapor with hygroscopic materials. This data publication is part of an interlaboratory study investigating the stability and performance of automated so…
View article: Interlaboratory study of the operational stability of automated sorption balances
Interlaboratory study of the operational stability of automated sorption balances Open
Automated sorption balances are widely used for characterizing the interaction of water vapor with hygroscopic materials. These instruments provide an efficient way to collect sorption isotherm data and kinetic data. A typical method for d…
View article: Mass, temperature, and relative humidity stability of automated sorption balances: results of an interlaboratory study
Mass, temperature, and relative humidity stability of automated sorption balances: results of an interlaboratory study Open
Automated sorption balances are widely used for characterizing the interaction of water vapor with hygroscopic materials. These instruments provide an efficient way to collect sorption isotherm data and kinetic data. A typical method for d…
View article: A neuromorphic model of active vision shows how spatiotemporal encoding in lobula neurons can aid pattern recognition in bees
A neuromorphic model of active vision shows how spatiotemporal encoding in lobula neurons can aid pattern recognition in bees Open
Bees’ remarkable visual learning abilities make them ideal for studying active information acquisition and representation. Here, we develop a biologically inspired model to examine how flight behaviours during visual scanning shape neural …
View article: Bumblebees retrieve only the ordinal ranking of foraging options when comparing memories obtained in distinct settings
Bumblebees retrieve only the ordinal ranking of foraging options when comparing memories obtained in distinct settings Open
Are animals’ preferences determined by absolute memories for options (e.g. reward sizes) or by their remembered ranking (better/worse)? The only studies examining this question suggest humans and starlings utilise memories for both absolut…
View article: Discrimination of edge orientation by bumblebees
Discrimination of edge orientation by bumblebees Open
Simple feature detectors in the visual system, such as edge-detectors, are likely to underlie even the most complex visual processing, so understanding the limits of these systems is crucial for a fuller understanding of visual processing.…
View article: Bumblebees retrieve only the ordinal ranking of foraging options when comparing memories obtained in distinct settings
Bumblebees retrieve only the ordinal ranking of foraging options when comparing memories obtained in distinct settings Open
Are animals’ preferences determined by absolute memories for options (e.g., reward sizes) or by their remembered ranking (better/worse)? The only studies examining this question suggest humans and starlings utilize memories for both absolu…
View article: Discrimination of edge orientation by bumblebees
Discrimination of edge orientation by bumblebees Open
Simple feature detectors in the visual system, such as edge-detectors, are likely to underlie even the most complex visual processing, so understanding the limits of these systems is crucial for a fuller understanding of visual processing.…
View article: Cover Feature: Inherent Ethyl Acetate Selectivity in a Trianglimine Molecular Solid (Chem. Eur. J. 41/2021)
Cover Feature: Inherent Ethyl Acetate Selectivity in a Trianglimine Molecular Solid (Chem. Eur. J. 41/2021) Open
Guided by crystal structure prediction, a “templating” strategy was used to construct selective binding sites in a trianglimine macrocycle crystal for ethyl acetate, an important chemical raw material and solvent. The resulting molecular c…
View article: Inherent Ethyl Acetate Selectivity in a Trianglimine Molecular Solid
Inherent Ethyl Acetate Selectivity in a Trianglimine Molecular Solid Open
Ethyl acetate is an important chemical raw material and solvent. It is also a key volatile organic compound in the brewing industry and a marker for lung cancer. Materials that are highly selective toward ethyl acetate are needed for its s…
View article: Automated video tracking and flight analysis show how bumblebees solve a pattern discrimination task using active vision
Automated video tracking and flight analysis show how bumblebees solve a pattern discrimination task using active vision Open
Active vision, the ability of the visual system to actively sample and select relevant information out of a visual scene through eye and head movements, has been explored in a variety of animal species. Small-brained animals such as insect…
View article: High-Speed Videography Reveals How Honeybees Can Turn a Spatial Concept Learning Task Into a Simple Discrimination Task by Stereotyped Flight Movements and Sequential Inspection of Pattern Elements
High-Speed Videography Reveals How Honeybees Can Turn a Spatial Concept Learning Task Into a Simple Discrimination Task by Stereotyped Flight Movements and Sequential Inspection of Pattern Elements Open
Honey bees display remarkable visual learning abilities, providing insights regarding visual information processing in a miniature brain. It was discovered that bees can solve a task that is generally viewed as spatial concept learning in …
View article: Insect Bio-inspired Neural Network Provides New Evidence on How Simple Feature Detectors Can Enable Complex Visual Generalization and Stimulus Location Invariance in the Miniature Brain of Honeybees
Insect Bio-inspired Neural Network Provides New Evidence on How Simple Feature Detectors Can Enable Complex Visual Generalization and Stimulus Location Invariance in the Miniature Brain of Honeybees Open
The ability to generalize over naturally occurring variation in cues indicating food or predation risk is highly useful for efficient decision-making in many animals. Honeybees have remarkable visual cognitive abilities, allowing them to c…
View article: Grasshopper DCMD: An Undergraduate Electrophysiology Lab for Investigating Single-Unit Responses to Behaviorally-Relevant Stimuli.
Grasshopper DCMD: An Undergraduate Electrophysiology Lab for Investigating Single-Unit Responses to Behaviorally-Relevant Stimuli. Open
Avoiding capture from a fast-approaching predator is an important survival skill shared by many animals. Investigating the neural circuits that give rise to this escape behavior can provide a tractable demonstration of systems-level neuros…