Biomaterial Database

Study of visual evoked potentials during normal monthly cycle in normal female subjects. 1999

S M Shushtarian, and S H Yahyavi

Islamic Azad University, Tehran Medical Unit.

Visual Evoked potential (VEP) is one of the electrophysiological technique which is used by Neurologist and Ophthalmologist for better diagnosis of optic nerve fiber and visual cortex diseases such as Multiple Sclerosis, Optical neuritis and etc. Among the female patients used to contact the Qods electrophysiological laboratory, the authors observed the extraordinary changes in VEP pattern, which was not expected by authors, hence the research was carried out to see the possible causes of such changes. One of the trails was the physiological monthly cycle and it's possible effect on VEP pattern. For this purpose 20 normal female subjects in age group between 18-28 years were selected and they undergone VEP recording in one of ordinary and monthly cycle days, both with checkerboard pattern reversal as well as flash stimulation. The results is a proof for the changes in latency of P100 peak and the shape of VEP pattern which is reflecting more in flash than pattern reversal stimulation. Finally it is suggested to related medical specialist to take into consideration the effect of monthly cycle in recording VEP in female subject.

UI	MeSH Term	Description	Entries
D008597	Menstrual Cycle	The period from onset of one menstrual bleeding (MENSTRUATION) to the next in an ovulating woman or female primate. The menstrual cycle is regulated by endocrine interactions of the HYPOTHALAMUS; the PITUITARY GLAND; the ovaries; and the genital tract. The menstrual cycle is divided by OVULATION into two phases. Based on the endocrine status of the OVARY, there is a FOLLICULAR PHASE and a LUTEAL PHASE. Based on the response in the ENDOMETRIUM, the menstrual cycle is divided into a proliferative and a secretory phase.	Endometrial Cycle,Ovarian Cycle,Cycle, Endometrial,Cycle, Menstrual,Cycle, Ovarian,Cycles, Endometrial,Cycles, Menstrual,Cycles, Ovarian,Endometrial Cycles,Menstrual Cycles,Ovarian Cycles
D011930	Reaction Time	The time from the onset of a stimulus until a response is observed.	Response Latency,Response Speed,Response Time,Latency, Response,Reaction Times,Response Latencies,Response Times,Speed, Response,Speeds, Response
D005074	Evoked Potentials, Visual	The electric response evoked in the cerebral cortex by visual stimulation or stimulation of the visual pathways.	Visual Evoked Response,Evoked Potential, Visual,Evoked Response, Visual,Evoked Responses, Visual,Potential, Visual Evoked,Potentials, Visual Evoked,Response, Visual Evoked,Responses, Visual Evoked,Visual Evoked Potential,Visual Evoked Potentials,Visual Evoked Responses
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293	Adolescent	A person 13 to 18 years of age.	Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults