Diagram of the experimental setup. Moths (1) were attached to the horizontal movement
sensor (2) in front of a screen
(3). Images were projected
onto the screen via the objective (4) of an
oscilloscope (5). Clicks emitted by
the insects were recorded using an acoustic
transducer (6). Signals from the sensory and
acoustic transducer were fed into an
analog-to-digital converter (7), which was
connected to a computer (8). The computer
drove a video adapter (9) to produce the
control signals for the oscilloscope.