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Hippocampal theta rhythm in awake, freely moving homing pigeons

Hippocampal theta rhythm in awake, freely moving homing pigeons Department of Psychology, Bowling Green State Unviersity, Bowling Green, Ohio 2 J.P. Scott Center for Neuroscience, Mind and Behavior, Bowling Green State University, Bowling Green, Ohio 3 Neurosciences Institute, San Diego, California KEY WORDS: rhythmic slow-wave activity; bird; field potentials; dorsomedial forebrain INTRODUCTION The hippocampal formation (HF) of birds and mammals plays a similar role in the memory representation of space. However, the extent to which the electrophysiological characteristics of the avian HF resemble those of mammals remains unknown. To begin to address this issue, field potential recordings were taken from the HF of awake, freely moving homing pigeons during periods of locomotor activity and awake immobility. Homing pigeons displayed hippocampal rhythmic slow-wave activity within the theta range during both behavioral states. However, theta was detected for a greater percentage of time during episodes of locomotor activity. In contrast to rats and similar to cats, hippocampal theta in homing pigeons was readily observed during immobility, was often in the lower frequency range of the theta band (generally about 4 –5 Hz), and frequently occurred during consummatory behavior (feeding). The existence of hippocampal theta rhythm in birds suggests that this rhythmic slow-wave activity is an ancestral property of hippocampal http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Hippocampus Wiley

Hippocampal theta rhythm in awake, freely moving homing pigeons

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References (24)

Publisher
Wiley
Copyright
Copyright © 2000 Wiley‐Liss, Inc.
ISSN
1050-9631
eISSN
1098-1063
DOI
10.1002/1098-1063(2000)10:6<627::AID-HIPO1000>3.0.CO;2-W
pmid
11153708
Publisher site
See Article on Publisher Site

Abstract

Department of Psychology, Bowling Green State Unviersity, Bowling Green, Ohio 2 J.P. Scott Center for Neuroscience, Mind and Behavior, Bowling Green State University, Bowling Green, Ohio 3 Neurosciences Institute, San Diego, California KEY WORDS: rhythmic slow-wave activity; bird; field potentials; dorsomedial forebrain INTRODUCTION The hippocampal formation (HF) of birds and mammals plays a similar role in the memory representation of space. However, the extent to which the electrophysiological characteristics of the avian HF resemble those of mammals remains unknown. To begin to address this issue, field potential recordings were taken from the HF of awake, freely moving homing pigeons during periods of locomotor activity and awake immobility. Homing pigeons displayed hippocampal rhythmic slow-wave activity within the theta range during both behavioral states. However, theta was detected for a greater percentage of time during episodes of locomotor activity. In contrast to rats and similar to cats, hippocampal theta in homing pigeons was readily observed during immobility, was often in the lower frequency range of the theta band (generally about 4 –5 Hz), and frequently occurred during consummatory behavior (feeding). The existence of hippocampal theta rhythm in birds suggests that this rhythmic slow-wave activity is an ancestral property of hippocampal

Journal

HippocampusWiley

Published: Jan 1, 2000

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