Related Experiment Videos
[Functional maturation of the cat visual cortex during prenatal ontogenesis]
Zhurnal Vysshei Nervnoi Deiatelnosti Imeni I P Pavlova
|March 1, 1976
Summary
Visual cortex development begins mid-pregnancy in cats, with early electrical responses to optic nerve stimulation. Maturation involves increasing amplitude and complexity of evoked potentials (EPs) in specific visual areas before birth.
Area of Science:
- Neuroscience
- Developmental Biology
- Visual System Research
Context:
- Studied feline fetuses during the second stage of antenatal development.
- Maintained intact placental blood circulation throughout the experiment.
Purpose:
- To investigate the developmental timeline of the visual cortex's perceptive functions.
- To characterize the maturation of the cortical component of the visual analyzer.
Summary:
- Functional maturation of the visual cortex begins in the second half of antenatal life.
- Early evoked potentials (EPs) are slow, three-phase oscillations recorded across the dorsal cortex.
- EPs become more complex, increasing in amplitude and developing distinct negative waves in later stages.
Impact:
- Provides insights into the critical periods of visual system development in mammals.
- Establishes a timeline for the emergence of visual processing capabilities in fetal cats.
- Offers a foundation for comparative studies on visual cortex maturation across species.