Top Posters
Since Sunday
g
3
3
2
J
2
p
2
m
2
h
2
s
2
r
2
d
2
l
2
a
2
Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
New Topic  
Verrine Verrine
wrote...
Go to Answer
Posts: 8
Rep: 0 0
8 years ago
I've just started learning about eye anatomy and physiology and there is something that makes me a bit confused.
I have learned so far that photoreceptors depolarize the cell when there is no light and hyperpolarize it in the presence of light. So when I looked into the receptive field of the retinal ganglia, they said that it has a center-surround organization with two possible cases: on center cells and off center cells. I don't understand why, for instance, in on center cells, when light falls in the center, the cell fires. Wasn't it supposed not to do that and hyperpolarize it instead?
I believe there is some sort of mechanism in between that I don't get, or maybe I misunderstood the information from the start?... Anyway, does anyone have any ideas?
Read 280 times
1 Reply
Replies
Answer accepted by topic starter
bio_manbio_man
wrote...
#1
Educator
Top Poster
Posts: 33233
Rep: 3442 15
8 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  907 People Browsing
 196 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 130
  
 1202
  
 1292
Your Opinion
Previous poll results: How often do you eat-out per week?