Temporal properties of liquid crystal displays: implications for vision science experiments

Area of Science:

• Vision Science
• Display Technology
• Photometry
• Temporal Properties

Background:

• Liquid Crystal Displays (LCDs) are increasingly replacing Cathode Ray Tubes (CRTs) in vision science.
• Many vision scientists are unfamiliar with the photometric and temporal characteristics of LCDs.
• Existing manufacturer specifications are often inadequate for precise experimental control.

Purpose of the Study:

• To assess the temporal properties of various LCD panel types.
• To identify key factors influencing LCD photometric output.
• To highlight potential issues and deficiencies of LCDs for vision science applications.

Main Methods:

• Measurements of temporal properties across different LCD panel types.
• Analysis of photometric output determinants.
• Evaluation of novel display technologies for potential side-effects.

Main Results:

• Manufacturer specifications are insufficient for accurate display selection and control.
• LCDs exhibit unreliable stimulus onsets/offsets and undesirable photometric components.
• Input lags and other technical deficiencies complicate real-time applications and research.

Conclusions:

• LCDs present significant challenges in vision science, including temporal inaccuracies and photometric instability.
• Novel display technologies may introduce unforeseen side-effects.
• Extensive, individual calibration and measurement of LCDs are essential before their use in vision science research.