7/ Mapping these effects to putative cell types, we find distinct contributions. Putative pyramidal neurons express content in burst-aligned events during maintenance, whereas putative interneurons are strongly modulated by memory load and behavior.

6/ This is where bursting comes in! We examined burst structure and found that maintenance is supported by transient, burst-like episodes of coordinated activity.

5/ To look at population dynamics more directly, we applied dPCA to concept-cell activity. During maintenance, stimulus trajectories evolve over time. Separation is stronger earlier and weaker later in the maintenance period, consistent with a code that transforms across time.

4/ Stimulus information is not stably expressed across the full maintenance. A key clue for us was that decoding accuracy increases with wider temporal windows. This suggests apparent persistence can emerge from temporally interleaved activity across neurons.

3/ Interesting: at the single-neuron level, most concept cells do not show sustained elevation throughout maintenance. Yet when pooled across neurons, population activity can still look persistent.

8/ Mapping these effects to putative cell types, we find distinct contributions. Putative pyramidal neurons express content in burst-aligned events during maintenance, whereas putative interneurons are strongly modulated by memory load and behavior.

7/ This is where bursting comes in! We examined burst structure and found that maintenance is supported by transient, burst-like episodes of coordinated activity.

6/ To look at population dynamics more directly, we applied dPCA to concept-cell activity. During maintenance, stimulus trajectories evolve over time. Separation is stronger earlier and weaker later in the maintenance period, consistent with a code that transforms across time.

5/ Stimulus information is not stably expressed across the full delay. A key clue for us was that decoding accuracy increases with wider temporal windows. This suggests apparent persistence can emerge from temporally interleaved activity across neurons.

4/ Interesting: at the single-neuron level, most concept cells do not show sustained elevation throughout maintenance. Yet when pooled across neurons, population activity can still look persistent.