The contrast sensitivity is an informative indicator of the human functional state [1] and is widely used in medical practice. Tremor modulation signal model significantly extends contrast sensitivity understanding by adding a number of physiological factors – the size of the photoreceptor, the amplitude and frequency of tremor oscillations, the size of the signal summation zone, the temporal indicators of transient perception processes, the form of test stimuli and external conditions.[2]

These details allow better and accurate investigation and understanding the physiological and psychophysical aspects of visual perception in their relationship. The model has been tested in studies involving healthy subjects[3] and individuals with various diseases[4]. Research data show model perspectives in assessing the functional state, psycho-emotional agitation, stress resistance and adaptation processes.

References

  1. The “Contrast sensitivity function and tremor-modulation signal” project.
  2. Response of the visual system to sine waves under various external conditions.
    // Journal of Optical Technology Vol. 85, Issue 2, 2018, pp. 100-105.
  3. Tremor Eye Movements as an Objective of Driver’s Fatigue.
    // ISSN 0362-1197, Human Physiology, 2022, Vol. 48, No. 1, pp. 71–77. © Pleiades Publishing, Inc., 2022.
  4. Pilot Study on Parameters of Eye Tremor in Healthy People and in Psychopathology.
    // XIII International Conference of the Lithuanian Neuroscience Association CONSCIOUSNESS, 26 November 2021, Kaunas, Lithuania, p.50