This page shows some first experiments with the H-interference transformation (HIT). Also it demonstrates differences between projection and reconstruction at some practical examples.

(Difference between interferential reconstruction and projection: A projection appears as the natural way to project anything: A photograph, a sensitive map. The result interference integral field appears mirrored in general. Time flows straight forward. We compute the excitement at the destination, the "detector space".

In opposite, reconstruction is the computational way to get the excitment map of the source "field" in nonmirrored form: by negation of the time axis we can calculate back into the source, the "generator field". We compute back in time onto the "generator"-field. We get an approximation in form of a non-mirrored reconstruction.)

The terms "field" or "space" have only a demonstrative function. Each pixle of the "field" is connected direct to all channel origins, the delay of each line is proportional to its length. In other words, we reach a discrete, spherical wave propagation with this arrangement.

Neurons are supposed to fire synchronous in this example. For simplification, single spikes may have the following form:

Each discrete impulse-wave expands with 1 meter per second. In case of a circular expansion, the pulses reach the 30 different electrodes (0...29) at different times, if they come from different locations on the field. We suggest a homogenous (discrete) wave-space with delays proportional to the distance between the spiking neuron and the electrode.

If each "neuron" pulses once, we get following time-functions at thirty electrodes (channel origins 0...29):

(The time-functions seem to look like EEG-samples or acoustic data streams).

Click here to start a higher resolution movie (141kB)

We find the generating neuron's fire in the same moment. The reconstruction appears not perfect, the reconstruction quality appears proportional to a lot of parameters, like channel number, velocity, space distances, channel arrangements and delays.

To examine the reconstruction parameters, click here to inspect the ini-file used by PSI-Tools.

Click here to start the movie (680kB)

For advertising purposes it is possible, to generate data streams also with other logos in a higher quality. It looks nice, to use a water bassin to interfere such waves. The channel data stream would be the same as used for PSI-Tools. We find the neurones fired synchronous (parallel).

Click here to start a *.AVI (247kB)

Click here to get the zipped movie (860kB/13MB)

The excitement scale is the same over the images of the movie, we used 16 channels here.

To remove cross interference we only can increase the delay between pulses. We include a pause between following pulses, while the channel remains still. The delay has to be greater the delay an impulse needs, to cross the detector field (field diagonale divided through speed), the resulting image appears perfect. We generate a four channel time function, the "electrodes" are at the corners.

Interference-integral of the 4-channel data set in 3D-view (PSI-Tools). Integration (over time axis) is necessarry, to get elementary wave-interferences appearing at different times into one excitment map.

gh

file created sept. 30, 1995

access no. since sept. 17, 1996 (or since reset of counter)