docs, typing, spikes module

neuro_py/spikes/spike_tools.py

@@ -1,22 +1,27 @@
-from typing import Union
+from typing import List, Union
 
 import numpy as np
 import pandas as pd
 
 
 def get_spindices(data: np.ndarray) -> pd.DataFrame:
     """
-    Get spike timestamps and spike id for each spike train in a
-        sorted dataframe of spike trains
+    Get spike timestamps and spike IDs from each spike train in a sorted DataFrame.
+
     Parameters
     ----------
     data : np.ndarray
-        spike times for each spike train, in a list of arrays
+        Spike times for each spike train, where each element is an array of spike times.
+
     Returns
     -------
-    spikes : pd.DataFrame
-        sorted dataframe of spike times and spike id
+    pd.DataFrame
+        A DataFrame containing sorted spike times and the corresponding spike IDs.
 
+    Example
+    -------
+    spike_trains = [np.array([0.1, 0.2, 0.4]), np.array([0.15, 0.35])]
+    spikes = get_spindices(spike_trains)
     """
     spikes_id = []
     for spk_i, spk in enumerate(data):
@@ -30,20 +35,27 @@ def get_spindices(data: np.ndarray) -> pd.DataFrame:
 
 
 def spindices_to_ndarray(
-    spikes: pd.DataFrame, spike_id: Union[list, np.ndarray, None] = None
-) -> np.ndarray:
+    spikes: pd.DataFrame, spike_id: Union[List[int], np.ndarray, None] = None
+) -> List[np.ndarray]:
     """
-    Convert spike times and spike id to a list of arrays
+    Convert spike times and spike IDs from a DataFrame into a list of arrays,
+    where each array contains the spike times for a given spike train.
+
     Parameters
     ----------
     spikes : pd.DataFrame
-        sorted dataframe of spike times and spike id
-    spike_id: list or np.ndarray
-        spike ids search for in the dataframe (important if spikes were restricted)
+        DataFrame containing 'spike_times' and 'spike_id' columns, sorted by 'spike_times'.
+    spike_id : list or np.ndarray, optional
+        List or array of spike IDs to search for in the DataFrame. If None, all spike IDs are used.
+
     Returns
     -------
-    data : np.ndarray
-        spike times for each spike train, in a list of arrays
+    List[np.ndarray]
+        A list of arrays, each containing the spike times for a corresponding spike train.
+
+    Example
+    -------
+    spike_trains = spindices_to_ndarray(spikes_df, spike_id=[0, 1, 2])
     """
     if spike_id is None:
         spike_id = np.unique(spikes["spike_id"])
@@ -53,11 +65,34 @@ def spindices_to_ndarray(
     return data
 
 
-def BurstIndex_Royer_2012(autocorrs):
-    # calc burst index from royer 2012
-    # burst_idx will range from -1 to 1
-    # -1 being non-bursty and 1 being bursty
+def BurstIndex_Royer_2012(autocorrs: pd.DataFrame) -> list:
+    """
+    Calculate the burst index from Royer et al. (2012).
+    The burst index ranges from -1 to 1, where:
+    -1 indicates non-bursty behavior, and 1 indicates bursty behavior.
 
+    Parameters
+    ----------
+    autocorrs : pd.DataFrame
+        Autocorrelograms of spike trains, with time (in seconds) as index and correlation values as columns.
+
+    Returns
+    -------
+    list
+        List of burst indices for each autocorrelogram column.
+
+    Notes
+    -----
+    The burst index is calculated as:
+        burst_idx = (peak - baseline) / max(peak, baseline)
+
+    - Peak is calculated as the maximum value of the autocorrelogram between 2-9 ms.
+    - Baseline is calculated as the mean value of the autocorrelogram between 40-50 ms.
+
+    Example
+    -------
+    burst_idx = BurstIndex_Royer_2012(autocorr_df)
+    """
     # peak range 2 - 9 ms
     peak = autocorrs.loc[0.002:0.009].max()
     # baseline idx 40 - 50 ms
@@ -78,19 +113,34 @@ def BurstIndex_Royer_2012(autocorrs):
     return burst_idx
 
 
-def select_burst_spikes(spikes, mode="bursts", isiBursts=0.006, isiSpikes=0.020):
+def select_burst_spikes(
+    spikes: np.ndarray,
+    mode: str = "bursts",
+    isiBursts: float = 0.006,
+    isiSpikes: float = 0.020,
+) -> np.ndarray:
     """
-    select_burst_spikes - Discriminate bursts vs single spikes.
-    adpated from: http://fmatoolbox.sourceforge.net/Contents/FMAToolbox/Analyses/SelectSpikes.html
-
-    Input:
-        spikes: list of spike times
-        mode: either 'bursts' (default) or 'single'
-        isiBursts: max inter-spike interval for bursts (default = 0.006)
-        isiSpikes: min for single spikes (default = 0.020)
-    Output:
-        selected: a logical vector indicating for each spike whether it
-                    matches the criterion
+    Discriminate bursts versus single spikes based on inter-spike intervals.
+
+    Parameters
+    ----------
+    spikes : np.ndarray
+        Array of spike times.
+    mode : str, optional
+        Either 'bursts' (default) or 'single'.
+    isiBursts : float, optional
+        Maximum inter-spike interval for bursts (default = 0.006 seconds).
+    isiSpikes : float, optional
+        Minimum inter-spike interval for single spikes (default = 0.020 seconds).
+
+    Returns
+    -------
+    np.ndarray
+        A boolean array indicating for each spike whether it matches the criterion.
+
+    Notes
+    -----
+    Adapted from: http://fmatoolbox.sourceforge.net/Contents/FMAToolbox/Analyses/SelectSpikes.html
     """
 
     dt = np.diff(spikes)