The paper
AUTHOR: Andras Lorincz
TITLE: Forming independent components via temporal
locking of reconstruction architectures:
a functional model of the hippocampus
JOURNAL: Biological Cybernetics (in press)
may be obtained from:
http://iserv.iki.kfki.hu/New/pub.html
Abstract:
The assumption is made that the formulation of relations as
independent components (IC) is a main feature of computations
accomplished by the brain. Further, it is assumed that memory traces
made of non-orthonormal ICs make use of feedback architectures to form
internal representations. Feedback then leads to delays and delays in
cortical processing form an obstacle to this relational processing.
The problem of delay compensation is formulated as a speed-field tracking
task and is solved by a novel control architecture. It is shown that in
addition to delay compensation the control architecture can also shape
long term memories to hold independent components if a two-phase
operation mode is assumed. Features such as a trisynaptic loop and
a recurrent collateral structure at the second stage of that loop emerge
in a natural fashion. Based on these properties a functional model of the
hippocampal loop is constructed.
Andras Lorincz
Department of Information Systems
Eotvos Lorand University, Budapest, Hungary