How Do Flies Really See in Slow Motion?

Flies have a different way of perceiving time than humans do. They perceive time as being slower than human time due to their metabolism and small size. For example, the hands on a clock are slower for a mosquito than they are for a human. This causes flies to perceive movement in slow motion, as if it is happening at a glacial pace.

A flie’s perception of time is different from ours, in part because they perceive light differently than humans. For instance, a fly’s eyes contain more mitochondria than a human’s, which gives them the supercharged vision that is so important to their survival. This difference in time perception allows flies to avoid getting swatted by a predator.

A fly’s eyes are made up of a series of string-like structures that react mechanically to light. In contrast, the eyes of vertebrates contain long tubes with chemical receptors at their base. The fly’s eyes are more sensitive and react faster, and the flies can perceive objects and movement with greater precision.

In order to measure how quickly a fly sees, researchers have developed a method of recording its neural signals using tiny electrodes. This method uses LED lights to produce tiny electrical currents in the retina. The information is then graphed on computer screens. Interestingly, the fastest fly can record distinct responses to light flickering 400 times per second, a rate that is six times faster than human speed.

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