--------Ongoing
Studies--------------------
C. Functional structure and intrinsic connections
C. Functional structure and intrinsic connections
Hisashi Tanigawa, Kathleen S. Rockland
A: Activity
spots elicited by a stimulus
B: Regions with high similarity in
responsiveness for 24 stimuli
against the black spot.
C: Terminals of horizontal connections
from the black spot in B.
D: Terminals were superimposed on B.
B: Regions with high similarity in
responsiveness for 24 stimuli
against the black spot.
C: Terminals of horizontal connections
from the black spot in B.
D: Terminals were superimposed on B.
We
examined the possibility that neurons project their axonal terminals to the
regions with similar response properties by directly comparing terminal patches
and activity spots. Although some terminal patches were partially overlapped
with regions with similar response properties (D, Green arrow), there were
also terminal patches with no similarity in visual responses (D, Red arrows)
and regions with similarity in response profiles without terminal patches.
The intrinsic horizontal connections seem not be related to shaping common
response properties at the columnar level revealed by optical imaging.
