apply_bessel
============



.. py:function:: stimupy.utils.apply_bessel(arr, order=0)


   Bessel function of the first kind of real order and complex argument.

   :param arr: Input array
   :type arr: np.ndarray
   :param order: Order of the bessel function. Default is 0.
   :type order: float

   :returns: **out** -- Output array
   :rtype: np.ndarray