Is the avian hippocampus a functional homologue of the mammalian hippocampus?

  title={Is the avian hippocampus a functional homologue of the mammalian hippocampus?},
  author={Michael Colombo and Nicola J. Broadbent},
  journal={Neuroscience \& Biobehavioral Reviews},
The role of the avian hippocampus in spatial memory
Analysis of the effects of hippocampal lesions on navigation find that basic navigational processes are left intact, and that at least some of the disruption of homing may be caused by disruption of the associability of information derived from the sun compass - a non-spatial deficit.
Transitive Behavior in Hippocampal-Lesioned Pigeons
The finding that the homing pigeon hippocampal formation is not necessary for solving this serial, conditional discrimination task is important for further understanding hippocampal function across species, and represents one of the few studies that have attempted to localize a brain region responsible for the phenomenon of transitive behavior learning.
A bird-brain view of episodic memory
Representing the Richness of Avian Spatial Cognition: Properties of a Lateralized Homing Pigeon Hippocampus
Using the homing pigeon as a model species, an accumulating body of data is reviewed indicating that the avian hippocampus is functionally lateralized, and it is proposed that the available data are consistent with a hypothesis of a left hippocampus more involved in navigational processes, and a right hippocampus more involvement in representing the locations of events.
Inhibition, the final frontier: the impact of hippocampal lesions on behavioral inhibition and spatial processing in pigeons.
Experiments 1 and 2 demonstrate that, much like the mammalian hippocampus, the avian hippocampus is critical to behavioral inhibition and spatial processing.
Neurons in the Hippocampus of Crows Lack Responses to Non-spatial Abstract Categories
The data suggest that categorical information is not processed in the avian hippocampus, in striking contrast to previous recordings in the telencephalic association area ‘nidopallium caudolaterale’ of the same crows, in which an abundance of numerosity-selective and working memory- selective neurons were reported.
The Evolution of the Cognitive Map
  • L. Jacobs
  • Biology, Psychology
    Brain, Behavior and Evolution
  • 2003
The recently proposed parallel map theory of hippocampal function provides a new perspective on the mammalian cognitive map into two dissociable mapping processes, mediated by different hippocampal subfields, and may facilitate the analysis of homologies, both in behavior and in the function of medial pallium subareas.


The Avian Hippocampus and Short-Term Memory for Spatial and Non-Spatial Information
  • M. Good, E. Macphail
  • Psychology, Biology
    The Quarterly journal of experimental psychology. B, Comparative and physiological psychology
  • 1994
Three experiments investigated the role of the pigeon hippocampal formation and the behavioural effects of hippocampal lesions in birds and mammals on short-term memory for non-spatial and spatial information, and the implications for avian hippocampal function are considered.
Hippocampal resections impair associative learning and recognition memory in the monkey
Though monkeys in the hippocampal group were impaired on both delays and lists, the impairment was more severe on the lists, with abnormal sensitivity to pro- and retroactive interference as a possible source of difficulty.
Object Recognition and Location Memory in Monkeys with Excitotoxic Lesions of the Amygdala and Hippocampus
A significant positive correlation between the percentage of damage to the hippocampus and scores on portions of the recognition performance test, suggesting that, paradoxically, the greater the hippocampal damage, the better the recognition.
Damage limited to the hippocampal region produces long-lasting memory impairment in monkeys
These findings show that, first, the hippocampal region itself is essential for normal memory function; and second, the adjacent entorhinal and parahippocampal cortices, either alone or in combination, are also an essential component of the medial temporal lobe memory system.
Place navigation impaired in rats with hippocampal lesions
It is reported that, in addition to a spatial discrimination impairment, total hippocampal lesions also cause a profound and lasting placenavigational impairment that can be dissociated from correlated motor, motivational and reinforcement aspects of the procedure.
Hippocampal and amygdaloid involvement in working memory for nonspatial stimuli.
Results indicate that the fimbria-fornix, but not the amygdala, is involved in nonspatial delayed match-to-sample, and the magnitude and duration of the impairment was a function of the size of the lesion.
The Effects of Hippocampal and Area Parahippocampalis Lesions in Pigeons: II. Concurrent Discrimination and Spatial Memory
Findings support the view that the Hp-APH in pigeons is important for the processing of spatial, rather than visual information.
Hippocampal lesions and negative patterning in pigeons
Pigeons with hippocampal lesions learned the task at the same rate as did control unoperated pigeons, in line with recent reports that the hippocampus is not critical for performance of the negative patterning task.