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Purkinje cell earrings | sterling silver
The Purkinje cell is the largest neuron in the cerebellum and the most elaborate dendritic tree in the vertebrate brain. Where motor learning lives, worn here as a 39 mm sterling silver leverback earring for cerebellar specialists and those who know the climbing-fibre teaching signal by heart.
The Science Behind the Purkinje Cell
Purkinje cells are GABA-ergic neurons forming a single layer between the molecular and granular layers of cerebellar cortex. Their dendritic trees are planar and elaborate, extending up to 200,000 parallel-fibre synapses on a single cell. Each Purkinje cell is the sole output of the cerebellar cortex, projecting to the deep cerebellar nuclei and from there to thalamus, motor cortex, brainstem, and spinal cord. They receive input from one climbing fibre originating in the inferior olive and hundreds of thousands of parallel fibres from granule cell axons. Long-term depression at the parallel-fibre-Purkinje synapse, triggered by climbing-fibre activity, is the cellular substrate of cerebellar motor learning. Loss of Purkinje cells defines spinocerebellar ataxia and other cerebellar disorders.
Who Reaches For This
- cerebellar neuroscientists working on motor learning, timing, and coordination
- movement-disorder neurologists treating spinocerebellar ataxia and cerebellar pathology
- neuroanatomists who teach the cerebellum and recognise this cell type at a glance
- graduate students whose thesis touches climbing-fibre or parallel-fibre physiology
For someone who can sketch the dendritic tree from memory and knows that motor learning happens at the parallel-fibre synapse.
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FAQ
What is special about the Purkinje cell's dendritic tree?
Two defining features. First, the dendrites are planar. They fan out in a single plane perpendicular to the parallel fibres, allowing the Purkinje cell to integrate inputs from a long line of granule cells along that axis. Second, the parallel-fibre synapse count reaches approximately 200,000 per cell, the highest of any vertebrate neuron. This computational capacity, combined with the climbing-fibre teaching signal from the inferior olive, makes the Purkinje cell the textbook example of supervised learning at the cellular level.
Why choose the Purkinje cell earrings over generic neuron pendants?
The Purkinje cell is a specialist call within neuroscience. The generic neuron is the foundational unit recognised across the field. The Purkinje cell is recognised by people whose work specifically engages with cerebellar physiology, motor learning, or movement-disorder pathology. Buying the Purkinje cell earrings tells the recipient you know the cell type they think about daily, not just the cell type that fits on a textbook cover.
What size are these earrings and what comes with them?
925 sterling silver, 39 mm leverback earrings. Nickel-free and hypoallergenic. Free worldwide DHL Express in 1-5 business days, with all import duties and taxes covered. 30-day “Love It or Return It” returns.
Is there a Purkinje cell pendant necklace as well?
Yes. The same Purkinje cell is available as a necklace pendant in sterling silver at 47 mm and as a necklace in gold vermeil. The earrings suit daily lab or clinical wear, while the pendants work well for seminars or milestone celebrations in cerebellar neuroscience.
Neuroscience
Dive into the intricacies of the human mind with our neuroscience-inspired jewelry collection. Each piece is a tactile ode to the neural networks that shape our thoughts, memories, and consciousness. Crafted with meticulous attention to detail, our designs mirror the dendritic branches and synaptic connections that form the basis of mental activity. With these elegant pieces, wear the enigma of cognition close to your skin, offering a subtle yet profound exploration of what it means to be sentient.
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