Age-Dependent Ocular Dominance Plasticity in Adult Mice
Author Information
Author(s): Konrad Lehmann, Siegrid Löwel, Ernest Greene
Primary Institution: Institut für Allgemeine Zoologie und Tierphysiologie, Friedrich-Schiller-Universität Jena, Jena, Germany
Hypothesis
Whether ocular dominance plasticity can be elicited in fully mature animals is not yet known.
Conclusion
Ocular dominance plasticity in mice is most pronounced in young animals, reduced in adolescence, and absent in fully mature animals older than 110 days.
Supporting Evidence
- Monocular deprivation for 4 days in young mice induced a significant ocular dominance shift.
- 7 days of monocular deprivation was necessary to induce a significant shift in young adult mice.
- Ocular dominance plasticity was absent in mature mice even after 14 days of deprivation.
Takeaway
When young mice have one eye covered, their brain can change to favor the open eye, but this ability goes away as they get older.
Methodology
The study used optical imaging of intrinsic signals and a virtual optomotor system to assess ocular dominance and visual acuity in mice of different ages after monocular deprivation.
Potential Biases
Potential bias due to the use of specific anaesthetics that may affect the results.
Limitations
The study primarily focused on male C57BL/6 mice, which may limit the generalizability of the findings to other strains or sexes.
Participant Demographics
Male C57BL/6 mice aged between 25 days and 230 days.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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