Application
Measures current central nervous activation (arousal).
The flicker-fusion frequency is regarded, with other criteria (e.g. EEG, SCR), as an indicator of the functional readiness of the central nervous system. The test is frequently used in clinical and pharmacological research. A number of studies have been conducted in the field of clinical neuropsychology, e.g. to measure drug-induced sedation.
Administration
The flicker frequency is measured using an increasing measurement technique. This means that the frequency of the flickering light is increased until a steady light is perceived. The fusion frequency is measured using a decreasing technique. This means that the frequency of a high-frequency light that the respondent perceives as a steady light is reduced until it subjectively starts to flicker. The respondent presses a button at the point at which this change in perception occurs.
Test forms
S1: Determines flicker and fusion frequency (increasing and decreasing measuring mode)
S2: Determines only fusion frequency (increasing measuring mode)
S3: Determines only flicker frequency (decreasing measuring mode)
Scoring
The following main variables are scored:
Fusion frequency (in Hz) and flicker frequency (in Hz) provide a measure of the activation level. The subsidiary variables provide information on reaction accuracy.
Scoring elements
Profile
Working time
Confidence interval
Profile analysis
Item analysis protocol
Progress chart
Special diagrammatic representation of results
Personalized Word report
Test type
Test information
modular
language-free item
parallel test form
conforms to the
additional device
high level of test
test form available for online presentation - open
links to CogniPlus
supervisor-supported
Languages
French
German
Hungarian
Polish
Russian
Duration
approx. 10 minutes
Age
Norms for ages 16+.