Critical Flicker Fusion Frequency: Relation to Resting Systolic Blood Pressure
| Autor: | Audrey H. Gutherie, Billy R. Hammond |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Adult
Male medicine.medical_specialty Adolescent Blood Pressure Blood Pressure Determination Mean age Sphygmomanometer Flicker fusion threshold Sphygmomanometers Surgery Flicker Fusion Ophthalmology Blood pressure Critical fusion frequency Internal medicine Psychophysics medicine Cardiology Humans Female Psychology Optometry |
| Zdroj: | Optometry and Vision Science. 81:373-376 |
| ISSN: | 1040-5488 |
| Popis: | OBJECTIVE Past studies have shown that a number of factors, both acute and chronic, influence individual differences in critical flicker fusion frequency (CFF). In this study, we assessed whether CFF co-varied with resting systolic blood pressure (SBP). METHODS SBP and CFF were assessed in one session in 221 subjects (mean age, 19.6 +/- 2.5 years), and SBP and CFF were assessed over 10 sessions in 12 subjects. CFF values were determined psychophysically using a 570 nm circular 1 degrees test field centrally fixated. Blood pressure was determined with an automated sphygmomanometer. RESULTS There was a significant (p < 0.0002) positive relation between CFF and SBP for the larger sample (n = 221). Significant within-subject relations were found for 6 of the 12 subjects tested repeatedly. CONCLUSIONS The combination of results strongly suggests that CFF and resting SBP are positively related. |
| Databáze: | OpenAIRE |
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