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.
Results 1-5 of 5
(1996) showed that animals could learn to solve the water maze even with
hippocam- pal lesions if they were trained with a certain paradigm. Schallert et al.
used animals with hippocampal lesions (created with injections of both colchicine
The main disadvantage of route navigation is that it takes a long time to train; it
cannot be trained in a single trial. Each position needs to be associated with a
direction. This means that enough time has to be spent in each location learning
Packard and McGaugh (1996) tested rats on a plus maze: rats were always
started on the south arm and trained to turn left (to the west arm). As noted by
Tolman, Ritchie, and Kalish (1946b), animals learn place strategies (locale
A rotation of the arena (with no corresponding rotation of the animal) ruled out
intramaze cues driving the return journey.4 In the second task, the rats were
trained to take an L-shaped path and then the path was blocked, forcing them to
A rotation of the arena (with no corresponding rotation of the animals) ruled out
intramaze cues driving the return journey. In the second task, rats were trained to
take an L-shaped path, which then was blocked, forcing them to try another route