diff --git a/core/nwb.misc.yaml b/core/nwb.misc.yaml
index 2d01fa82..3180de92 100644
--- a/core/nwb.misc.yaml
+++ b/core/nwb.misc.yaml
@@ -199,10 +199,10 @@ groups:
     attributes:
     - name: resolution
       dtype: float64
-      doc: The smallest possible difference between two spike times. Usually 1 divided by the acquisition sampling rate
-        from which spike times were extracted, but could be larger if the acquisition time series was downsampled or
-        smaller if the acquisition time series was smoothed/interpolated and it is possible for the spike time to be
-        between samples.
+      doc: The temporal resolution of the spike times, in seconds. This is typically the sampling period (1/sampling_rate)
+        of the acquisition data from which spikes were extracted. Notes - (1) If the acquisition data was downsampled before
+        spike sorting, the resolution will be larger (coarser) than the original acquisition sampling period. (2) If
+        interpolation was applied during spike sorting, spike times may fall between samples of the acquisition data.
       required: false
   - name: obs_intervals_index
     neurodata_type_inc: VectorIndex
diff --git a/docs/format/source/format_release_notes.rst b/docs/format/source/format_release_notes.rst
index 2be07957..d421a10f 100644
--- a/docs/format/source/format_release_notes.rst
+++ b/docs/format/source/format_release_notes.rst
@@ -12,6 +12,8 @@ Minor changes
   that are typically used together for analysis, such as spike sorting. (#659)
 - Specified that units for ``ElectrodesTable`` coordinate fields (``x``, ``y``, ``z``, ``rel_x``, ``rel_y``, ``rel_z``)
   should be in microns. (#658)
+- Improved documentation of ``Units.spike_times.resolution`` to clarify that it represents the temporal resolution
+  (sampling period) of the spike times. (#666)
 
 
 2.9.0 (June 26, 2025)