**Question:**
<br>Do synchronized cell assemblies drive visual perception?
**Hypotheses:**
1. Non-local populations of neurons (distant neurons in the same area, and especially neurons across areas) synchronize at levels above chance.
2. Excess synchrony is predictive of perception.
**Null Hypothesis:**
<br>Synchrony occurs at levels expected by chance, where chance is defined by rate-matched (to data) Poisson processes.
**Method:**
<br>Record from populations of neurons, expected to be related (in a coding sense) to each other but distributed across the visual system. This included thalamocortical (LGN - V1, LP-V1/HVA) and corticocortical (V1-HVA). Targeting approach: direct visualization of fluorescent projection tracing during probe placement.
**Result:**
<br>??