Neurophysiology & Synapses curves

1 curve · untimed · read the graph, then answer the questions on it.

Graded potentials and summationCurve 1 of 1 · Q 1/3

An intracellular recording at a neuron's axon hillock while an excitatory input fires. Early in the trace the input fires twice, well separated; later it fires a rapid burst. The dashed line is threshold.

↑ Membrane potential (mV) · → Time (ms)

The deflections at A and B are the same size and neither fires the cell. What are they?

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