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Purkinje cell necklace | sterling silver
The Purkinje cell is the largest neuron in the cerebellum and the most elaborate dendritic tree in the vertebrate brain. The sole output of the cerebellar cortex, the cell where motor learning lives. Worn here as a 47 mm sterling silver pendant.
The Science Behind the Purkinje Cell
Purkinje cells are GABA-ergic neurons that form a single layer between the molecular layer and the granular layer of the cerebellar cortex. Their dendritic trees are flat, planar, and the most elaborate of any vertebrate neuron, with up to 200,000 parallel-fibre synapses on a single cell. They are the sole output of the cerebellar cortex, projecting to the deep cerebellar nuclei and from there to thalamus, motor cortex, brainstem, and spinal cord. Each Purkinje cell receives input from one climbing fibre (originating in the inferior olive) and from hundreds of thousands of parallel fibres (granule cell axons). Long-term depression at parallel-fibre-Purkinje synapses, induced by climbing-fibre activity, is the cellular substrate of cerebellar motor learning. Loss of Purkinje cells is the defining cellular pathology in spinocerebellar ataxia and several other cerebellar disorders.
Who Reaches For This
- cerebellar neuroscientists working on motor learning, timing, or coordination
- movement-disorder neurologists treating spinocerebellar ataxia or other cerebellar pathology
- neuroanatomists who teach the cerebellum and recognise the cell type on sight
- graduate students whose thesis touches climbing-fibre or parallel-fibre physiology
For someone who can sketch the dendritic tree from memory, and who knows that long-term depression at the parallel-fibre synapse is what makes motor learning possible.
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FAQ
Why pick the Purkinje cell over the generic neuron pendant?
Because 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 the cerebellum, motor learning, or movement-disorder pathology. Buying the Purkinje cell tells the recipient you know the cell type they think about daily, not just the cell type that fits on a textbook cover.
What makes the Purkinje cell's dendritic tree so unusual?
Two things. First, it is planar. The dendrites fan out in a single plane perpendicular to the parallel fibres, which means the Purkinje cell can integrate inputs from a long line of granule cells along that axis. Second, the parallel-fibre synapse count is roughly 200,000 per cell, the highest of any vertebrate neuron. The resulting 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.
What size is the pendant and what chain comes with it?
925 sterling silver, 47 mm pendant on a 45 cm sterling silver chain (ø 1.8 mm) with a 5 cm extender. 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 gold version?
Yes. The same Purkinje cell is available in 18K gold vermeil at the same 47 mm size and chain length. Silver tends to suit working clinical or lab use, gold tends to suit a milestone in cerebellar neuroscience or a major appointment in clinical neurology.
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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