Honey Bee Angular Velocity Detection

Model files for: Cope et al, A Model for an Angular Velocity-Tuned Motion Detector Accounting for Deviations in the Corridor-Centering Response of the Bee, PLOS Computational Biology (2016) We present a novel neurally based model for estimating angular velocity (AV) in the bee brain, capable of quantitatively reproducing experimental observations of visual odometry and corridor-centering in free-flying honeybees, including previously unaccounted for manipulations of behaviour. The model is fitted using electrophysiological data, and tested using behavioural data. Based on our model we suggest that the AV response can be considered as an evolutionary extension to the optomotor response. The detector is tested behaviourally in silico with the corridor-centering paradigm, where bees navigate down a corridor with gratings (square wave or sinusoidal) on the walls. When combined with an existing flight control algorithm the detector reproduces the invariance of the average flight path to the spatial frequency and contrast of the gratings, including deviations from perfect centering behaviour as found in the real bee’s behaviour. In addition, the summed response of the detector to a unit distance movement along the corridor is constant for a large range of grating spatial frequencies, demonstrating that the detector can be used as a visual odometer. This archive contains the files needed to run the model using the SpineML toolchain.

本数据集配套模型文件源自Cope等人2016年发表于《PLOS计算生物学》的研究论文《考虑蜜蜂走廊居中响应偏差的角速度调谐运动检测器模型》。本研究提出了一种全新的基于神经机制的蜜蜂脑内角速度（angular velocity，AV）估算模型，可定量复现自由飞行蜜蜂的视觉里程计与走廊居中行为的实验观测结果，包括此前尚未被合理解释的行为操控现象。该模型通过电生理数据拟合得到，并利用行为学数据进行验证。基于本模型，我们认为AV响应可被视为视动反应的进化延伸。本检测器采用走廊居中范式开展计算机模拟行为学测试：实验中蜜蜂沿两侧壁带有光栅（方波或正弦波）的通道飞行。将本检测器与现有飞行控制算法结合后，可复现蜜蜂平均飞行路径对光栅空间频率与对比度的不变性，包括真实蜜蜂行为中观测到的非完美居中偏差现象。此外，在较大的光栅空间频率范围内，检测器沿通道移动单位距离的总响应保持恒定，证明本检测器可作为视觉里程计使用。本归档包含使用SpineML工具链运行该模型所需的全部文件。