Download Slide ()

The potential for interference between overlapping associative memory networks. Each link in the diagram represents a bidirectional pair of excitatory
synapses.
A. Two nonoverlapping cell assemblies. Each assembly is a group of neurons that is fully coupled by strong excitatory synapses. Because the cell
assemblies share neither neurons nor synapses in common, they are completely independent. One cell assembly alone can be activated (red) or both
assemblies can be activated simultaneously (not shown).
B. Two overlapping
cell assemblies.
Because some
neurons
are Fifth
involved
Source: Neural
Networks, Principles
of Neural
Science,
Editonin both cell assemblies (dashed line), there is potential for interference.
Activation of Citation:
one cell Kandel
assembly
could
potentially
spread
to
the
other
cell
drawing).
This can
be prevented.
the Editon;
threshold
for Available
neural
ER, Schwartz JH, Jessell TM, Siegelbaum SA,assembly
Hudspeth(lower
AJ, Mack
S. Principles
of Neural
Science,IfFifth
2012
activation is sufficiently
high,
the
neurons
belonging
uniquely
to
the
second
cell
assembly
remain
below
threshold.
Conversely,
if
the
threshold
is
low,
then
at: http://mhmedical.com/ Accessed: May 10, 2017
it will be impossible
to
activate
a
single
cell
assembly
without
the
other
(not
shown).
Copyright © 2017 McGraw-Hill Education. All rights reserved