Cited by 59Memory and Neural MechanismsNeurogenesis and neuroplasticity mechanismsNeuroscience and Neuropharmacology Research

Learning‐related Alterations in the Visual Responsiveness of Neurons in a Memory System of the Chick Brain

Brown, M. W., Horn, G.·1994·European Journal of Neuroscience

Abstract

The intermediate and medial hyperstriatum ventrale (IMHV) of the chick brain is known to be essential for the learning process of imprinting. The activity of neurons was recorded from the left IMHV of 2‐day‐old unanaesthetized chicks while the chicks were free to move in a running wheel. The chicks were either raised in complete darkness or visually trained (imprinted) with a set duration of exposure to a visual image. The first group of these birds was trained by exposure for 100 min to a rotating red box and the second was trained by similar exposure to a rotating blue cylinder. A third group was left untrained. Training more than doubled the proportion of sites that responded to the stimulus used to train the bird, relative to the proportion of sites responsive to the other stimulus and to the proportion of sites responsive in the untrained birds; the learning‐related increase was selective and highly significant. Behavioural monitoring indicated that the enhanced responsiveness could not be explained by overt differences in the alertness, attentiveness or movements of the birds. No significant effect of training was found on the proportion of sites responsive to a rotating stuffed jungle fowl or to the sound of a maternal call. The response at certain sites selectively signalled the presence of the training stimulus, while at others the response showed generalization across stimulus shape or colour. There was a non‐specific effect of training upon the pattern of spontaneous discharges of the neurons: the numbers of spikes occurring in clusters (bursts) was significantly reduced in trained birds compared with the dark reared controls.

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Registry

Crossref · 10.1111/j.1460-9568.1994.tb01009.x

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45 of 45 references verified0 citation errors · 0 not checkable

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  • Imprinting over repeated training sessions leads to a gradual increase in the number of IMM neurons that selectively respond to the imprinting stimulus, correlated with the chick's preference for the imprinting stimulus.

    “Imprinting over repeated training sessions leads to a gradual increase in the number of neurons in the intermediate and medial mesopallium (IMM, also termed intermediate and medial hyperstriatum) that selectively respond to the imprinting stimulus which is correlated with the chick's preference for the imprinting stimulus (144, 568).”

    From About Sleep's Role in Memory (2013) · cites this paper as [144]

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Authors
Brown, M. W., & Horn, G.
Affiliations
  • University of Bristol (GB)
  • University of Cambridge (GB)
Corresponding author
Brown, M. W.
Venue
European Journal of Neuroscience
Publisher
Wiley
Published
1994-09
Volume
6
Issue
9
Pages
1479-1490
ISSN
  • 0953-816X (ISSN-L)
  • 1460-9568
OpenAlex
W1975342831
Cited by
59
References
44
Citations by year
2026: 1 · 2024: 1 · 2022: 1 · 2020: 1 · 2019: 1 · 2017: 1 · 2014: 5 · 2013: 5
FWCI
1.72
Type
journal article
Language
en
Open access
closed
Locations
  • European Journal of Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
chick brain, imprinting, visual imprinting, spontaneous neuronal discharge, burst firing, stimulus generalization, dark rearing
MeSH terms
Acoustic Stimulation, Animals, Animals, Newborn, Brain, Chickens, Imprinting, Psychological, Learning, Memory, Movement, Neurons, Photic Stimulation, Visual Perception, Vocalization, Animal

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