Electroretinogram
From Psychology Wiki
Community portal · Tasks to do · News · Help
Clinical · Educational · Ind&Org · Other fields · Professional · Transpersonal · World
Assessment | Biopsychology | Comparative | Cognitive | Developmental | Language | Personality | Philosophy | Research Methods | Social | Statistics
Biological: Behavioural genetics · Evolutionary psychology · Neuroanatomy · Neurochemistry · Neuroendocrinology · Psychoneuroimmunology · Physiological Psychology · Psychopharmacology
In electroretinography A multifocal electroretinogram (ERG) is used to record separate responses for different retinal locations.
Electroretinograms can be broken down into three components:
- an initial a-wave, caused by extracellular ionic currents generated by photoreceptors during phototransduction,
- the b-wave, which corresponds to bipolar cell activity,
- and the later c-wave, which is generated by the retinal pigment epithelium and Müller cells.
Depending on the species the ERG is taken from, the c-wave may be positive, negative, or absent in part or in whole.[1]
[edit] References
- ↑ Clinical Electrophysiology,Donnell Creel, date unknown (accessed 19 January,2007)
