Beyond the Cognitive Map: From Place Cells to Episodic Memory
MIT Press, 1999 - Medical - 420 pages
There are currently two major theories about the role of the hippocampus, a distinctive structure in the back of the temporal lobe. One says that it stores a cognitive map, the other that it is a key locus for the temporary storage of episodic memories. A. David Redish takes the approach that understanding the role of the hippocampus in space will make it possible to address its role in less easily quantifiable areas such as memory. Basing his investigation on the study of rodent navigation--one of the primary domains for understanding information processing in the brain--he places the hippocampus in its anatomical context as part of a greater functional system.
Redish draws on the extensive experimental and theoretical work of the last 100 years to paint a coherent picture of rodent navigation. His presentation encompasses multiple levels of analysis, from single-unit recording results to behavioral tasks to computational modeling. From this foundation, he proposes a novel understanding of the role of the hippocampus in rodents that can shed light on the role of the hippocampus in primates, explaining data from primate studies and human neurology. The book will be of interest not only to neuroscientists and psychologists, but also to researchers in computer science, robotics, artificial intelligence, and artificial life.
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Path integration is the ability to return directly to a starting point (sometimes
called a home base or reference point) from any location in an environment, even
in the dark or after a long circuitous route (Barlow, 1964; Gallistel, 1990; Maurer
The basic idea of path integration is shown in figure 6.1: if one kftfiWS 6he S
location al lime I as well as one s speed and direction at time /, then position at
time / + / can be calculated. The main problem with path integration is that if your
MODELS OF PATH INTEGRATION Kybernetic Models Early models of path
integration addressed issues of the computational components of path
integration, attempting to account for the animals' behavior, but generally not
addressing the ...
(Benhamou, Sauve, and Bovet, 1990), which can produce non- systematic errors.
However, as pointed out by Maurer and Seguinot (1995), because this model
corresponds to the mathematical ideal path integration mechanism, it cannot ...
PATH INTEGRATION What is the anatomical locus of path integration? A number
of hypotheses for the anatomical locus of path integration were discussed in
chapter 6: hippocampus (McNaughton et al., 1996), subiculum (Sharp, 1997),
and a ...