Module 04 Activity Worksheet

Module: Module 04: Neuroanatomy for Connectomics
Duration: 4 hours
Generated from the module page. Edit modules/module04.md, not this file.

Capability target

Interpret a local EM region using correct anatomical context and document one confident and one uncertain structural call.

You are done when you can demonstrate this, not when you have filled in every box below.

Before you start

Check that you have:

• Modules 01-03

Bring one question you already have about this topic. Write it here so you can check at the end whether it was answered:

My question:

Questions this module answers

Keep these in view. At the end, answer each in one sentence.

1. What anatomical context is needed for robust interpretation?
   • Your answer:
2. Where do local cues fail without region-level information?
   • Your answer:

The task

Scenario: You are given a set of 8 EM patches from a mouse cortex volume. The patches span different layers (L1 through L6) but are presented without layer labels.

1. For each patch, determine the likely cortical layer using soma density, neuropil texture, and cell-type signatures.
2. Identify the dominant cell type and compartment type in each patch.
3. For each call, record the evidence chain and confidence level.
4. Identify 2 patches where you are most uncertain and explain what additional information would help.
5. Compare your annotations with a partner and resolve disagreements.

What you hand in

• Completed annotation table (patch ID, layer call, structure call, evidence, confidence)
• Two uncertainty notes with proposed resolution strategies
• One “lesson learned” about how context changed an interpretation

Working checklist

Tick as you go. If you skip a step, write why — a skipped step with a stated reason is a decision; a skipped step without one is a gap.

• Identify anatomical region/layer using soma density, cell-type signatures, and neuropil texture.
• Map candidate structures to known context (expected cell types, expected synapse types).
• Cross-check with neighboring slices — does the interpretation remain consistent across z?
• Annotate confidence and escalation path for ambiguous cases.

Evidence and reasoning

Fill one row per claim you make in your artifact. A claim without a limitation is not finished.

Confidence. For your main claim, mark one and say why:

• High — two or more independent lines of evidence agree
• Medium — one strong line, or several that share a weakness
• Uncertain — the deciding evidence is not available to me

Why:

One alternative I considered and rejected, and the reason:

Misconception self-check

These are the errors this module is designed to prevent. Confirm you did not make them, or note where you nearly did:

• I did not assume: Cortical layer can be read off a single EM patch without soma density or neuropil context.
• I did not assume: The hippocampal laminar logic transfers to neocortex because both are cortex.
• I did not assume: An atlas coordinate is a ground-truth location.
• I did not assume: Annotation confidence should be uniform across a volume.

Session timing (facilitator reference)

Rubric

Score yourself before anyone else does. Where you fall short, name the specific next action rather than a general intention.

• Minimum pass
  • Context-aware call and confidence note recorded for every patch.
  • Layer identification within ±1 layer for the majority of patches.
  • At least one evidence chain written in the form “features observed, therefore layer, therefore expected structures.”
• Strong performance
  • Each call links at least two independent EM cues (soma density, neuropil texture, cell-type signature) to layer context.
  • Confidence varies across patches in a calibrated way: boundary and volume-edge patches score lower than mid-layer patches.
  • Cross-slice (z) evidence cited wherever a single-section call was ambiguous.
  • Partner disagreements resolved by naming which cue was decisive, not by splitting the difference.
• Common failure to flag
  • Definitive call from a single feature without a layer or neighbor-slice check.
  • Uniform “high” confidence across all patches, including boundary cases.
  • Hippocampal and neocortical laminar logic applied interchangeably.

My self-assessment:

• Strongest part of my work, and the evidence for that:
• Weakest part, and the specific next action:

Exit prompt

Describe one case where anatomy context changes your interpretation of an EM structure.

Your answer:

Peer review (swap worksheets)

Reviewing someone else’s reasoning is the fastest way to see the gaps in your own. Assess the evidence quality, not whether you agree with the conclusion.

• Is every claim paired with specific evidence?
• Is at least one limitation stated, and is it a real one?
• Is the confidence level justified by the number of independent evidence lines?
• One thing this person did better than me:
• One question I would ask them:

Module page: /modules/module04/ · Slides: /modules/slides/module04/ · Facilitator guide