Doctor Who
Object

Laboratory Neuristors (Watkins' Lab Equipment)

Specialized electronic components (including neuristors) stored amid laboratory equipment in Professor Watkins' lab, essential for assembling wearable depolarizer devices. The Doctor halts work on the third depolarizer unit due to exhaustion of stock, sparking a desperate scramble as the team tears through shelves and machinery for spares. Professor Watkins confirms their prior availability in the lab, but the dire shortage leaves only three functional depolarizers against the Cybermen's global signal. The equipment includes scattered circuit boards, tools, and components across benches and shelves, serving as the last-ditch resource in the scramble to counter the Cybermen invasion.
3 appearances

Purpose

Critical components enabling construction of depolarizers to jam Cybermen hypnotic control waves

Significance

Acute shortage triggers frantic lab search, limits defenses to three units, and escalates narrative tension as failure risks London's enslavement

Appearances in the Narrative

When this object appears and how it's used

3 moments
S6E16 · The Invasion Part 6
Doctor reveals Vaughn’s betrayal and Cybermen’s global plan

Neuristors are the specialized electronic components needed to construct the depolarizer. The Doctor asks Professor Watkins if any are available, and Watkins confirms their presence in the laboratory. The scarcity of neuristors later becomes a critical limitation, as the team realizes they can only build three depolarizers—highlighting the urgency and resource constraints of their mission.

Before: Stored in the laboratory, available for use in constructing electronic devices.
After: Allocated for use in building the depolarizer, with a shortage noted as a limiting factor.
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S6E16 · The Invasion Part 6
Zoe proposes depolarizer countermeasures

The Doctor halts work on the third depolarizer unit due to an exhaustion of neuristors, sparking a desperate scramble as the team tears through shelves and machinery for spares. These specialized electronic components are essential for assembling the wearable depolarizer devices, which are humanity's only hope against the Cybermen's control signal. The shortage of neuristors adds a layer of urgency and tension to the mission.

Before: Available in limited quantities in the laboratory, sufficient for initial construction but insufficient for full-scale production.
After: Exhausted, with the team scrambling to find additional neuristors to complete the depolarizers.
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S6E16 · The Invasion Part 6
Doctor scrambles for depolarizer components

The laboratory equipment—circuit boards, tools, and scattered components—becomes the battleground for the team’s desperate search. The Doctor’s command to 'search, everybody. Come along' transforms the lab from a place of ordered science into a chaotic scramble. Every drawer, shelf, and machine is fair game as hands plunge into the clutter, hoping to uncover hidden neuristors. The equipment’s involvement is both practical (as the potential source of spare parts) and atmospheric (creating a sense of urgency and disarray).

Before: The lab’s equipment is cluttered but organized, with components and tools scattered across benches and shelves. The neuristors are presumed to be exhausted, but the equipment itself remains untouched by the search.
After: The lab is in disarray, with equipment torn apart and shelves ransacked in the frantic search for neuristors. The clutter is now a mess of opened drawers, scattered tools, and upended machines, reflecting the team’s desperation.
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