AI Article Synopsis
- The study aimed to investigate how aging affects the selectivity of visual cortical neurons in cats with respect to spatial frequencies.
- Researchers recorded the responses of V1 neurons to different spatial frequencies in both young and old adult cats.
- Results showed that older cats had significantly lower optimal and high cut-off spatial frequencies compared to younger cats, implying that aging could lead to a decline in visual acuity across mammals.
Article Abstract
Objective: To examine whether the selectivity of visual cortical neurons to stimulus spatial frequencies would be affected by aging in cats.
Methods: In vivo extracellular single-unit recording techniques were employed to record the tuning responses of V1 neurons to different stimulus spatial frequencies in old and young adult cats.
Results: Statistical analysis showed that the mean optimal spatial frequency of grating stimuli that evoked the maximal response of V1 neurons in old cats was significantly lower than that in young adult cats. Furthermore, the mean high cut-off spatial frequency of grating stimuli that evoked the half amplitude of the maximal response of V1 neurons in old cats was also significantly lower than that in young adult cats.
Conclusion: These results are consistent with those reported in the V1 of old monkeys, suggesting that the age-related decline in the selectivity of visual cortical cells to spatial frequency could be generalized to all mammalian species and might contribute to visual acuity reduction in senescent individuals.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5560276 | PMC |
| http://dx.doi.org/10.1007/s12264-011-1037-1 | DOI Listing |
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