load_horsager2009([subjects, electrodes, …]) Load data from [Horsager2009]
pulse2percept.datasets.horsager2009.load_horsager2009(subjects=None, electrodes=None, stim_types=None, shuffle=False, random_state=0)[source]

Load data from [Horsager2009]

Load the threshold data described in [Horsager2009]. Average thresholds were extracted from the figures of the paper using WebplotDigitizer.

Retinal implants: Argus I
Subjects: 2
Number of samples: 552
Number of features: 21

The dataset includes the following features:

subject Subject ID, S05-S06
implant Argus I
electrode Electrode ID, A1-F10
task ‘threshold’ or ‘matching’
stim_type ‘single_pulse’, ‘fixed_duration’, ‘variable_duration’, ‘fixed_duration_supra’, ‘bursting_triplets’, ‘bursting_triplets_supra’, ‘latent_addition’
stim_dur Stimulus duration (ms)
stim_freq Stimulus frequency (Hz)
stim_amp Stimulus amplitude (uA)
pulse_type ‘cathodic_first’
pulse_dur Pulse duration (ms)
interphase_dur Interphase gap (ms)
delay_dur Stimulus delivered after delay (ms)
ref_stim_type Reference stimulus type (‘single_pulse’, …)
ref_freq Reference stimulus frequency (Hz)
ref_amp Reference stimulus amplitude (uA)
ref_amp_factor Reference stimulus amplitude factor (xThreshold)
ref_pulse_dur Reference stimulus pulse duration (ms)
ref_interphase_dur Reference stimulus interphase gap (ms)
theta Temporal model output at threshold (a.u.)
source Figure from which data was extracted

Some stimulus types require a reference stimulus. For example, ‘bursting_triplets_supra’ were delivered at 2x or 3x threshold of a reference bursting triplet pulse. The parameters of the reference stimulus are given in ref_* fields.

Missing values are denoted by NaN.

New in version 0.6.

  • subjects (str | list of strings | None, optional) – Select data from a subject or list of subjects. By default, all subjects are selected.
  • electrodes (str | list of strings | None, optional) – Select data from a single electrode or a list of electrodes. By default, all electrodes are selected.
  • stim_types (str | list of strings | None, optional) – Select data from a single stimulus type or a list of stimulus types. By default, all stimulus types are selected.
  • shuffle (boolean, optional) – If True, the rows of the DataFrame are shuffled.
  • random_state (int | numpy.random.RandomState | None, optional) – Determines random number generation for dataset shuffling. Pass an int for reproducible output across multiple function calls.

data (pd.DataFrame) – The whole dataset is returned in a 552x21 Pandas DataFrame