A new adaptive temporal filter: Application to photosensitive seizure patients

A new adaptive temporal filtering (ATF) technique was developed to prevent heath hazards due to flicker stimuli from televisions, videos or other displays. This ATF method could reduce frame‐to‐frame or field‐to‐field flicker stimuli at around 10–30 Hz which are particularly risky for photosensitive...

Full description

Saved in:
Bibliographic Details
Published in:Psychiatry and clinical neurosciences 2000-12, Vol.54 (6), p.685-690
Main Authors: Nomura, Masahide, Takahashi, Takeo, Kamijo, Ken‐Ichi, Yamazaki, Toshimasa
Format: Article
Language:English
Subjects:
adaptive temporal filter
Adaptive temporal filters
Adolescent
Adult
Animation
Electroencephalography
Epilepsy
Epilepsy, Reflex - diagnosis
Epilepsy, Reflex - physiopathology
Female
Flickers
Form Perception
Humans
Japan
Male
Oscillometry
Photic Stimulation - adverse effects
photosensitive epilepsy
Photosensitivity
Pokemon
Prevention
Television
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A new adaptive temporal filtering (ATF) technique was developed to prevent heath hazards due to flicker stimuli from televisions, videos or other displays. This ATF method could reduce frame‐to‐frame or field‐to‐field flicker stimuli at around 10–30 Hz which are particularly risky for photosensitive individuals. The present ATF efficacy with a computer simulation was studied in 11 photosensitive epilepsy patients. In order to control visual stimuli and induce photoparoxysmal response (PPR), we employed a problematic scene of the Pocket Monster incident containing 12 Hz red/blue flicker images lasting for 4 s. This image, shown with a 14‐inch television set 2 m in front of subjects, promptly elicited generalized PPR in all cases, while the filtered image did not induce any PPR. These results suggest that the present ATF method may be useful as a preventive measure of photosensitive seizures triggered by stimulative images from televisions or other displays.
ISSN:1323-1316
1440-1819
DOI:10.1046/j.1440-1819.2000.00770.x