https://github.com/rob-luke/updownmethods
Python module for up down methods
https://github.com/rob-luke/updownmethods
Last synced: 2 months ago
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Python module for up down methods
- Host: GitHub
- URL: https://github.com/rob-luke/updownmethods
- Owner: rob-luke
- License: mit
- Created: 2015-03-21T14:41:50.000Z (about 10 years ago)
- Default Branch: master
- Last Pushed: 2015-05-12T14:37:14.000Z (about 10 years ago)
- Last Synced: 2025-02-10T12:12:10.924Z (4 months ago)
- Language: Python
- Size: 293 KB
- Stars: 1
- Watchers: 2
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Up Down Methods
[](https://travis-ci.org/codles/UpDownMethods)
[](https://coveralls.io/r/codles/UpDownMethods)
Python module implementing the transformed Up-Down procedure
## Description
Framework for generating psychoacoustic stimuli parameters based on [Levitt 1971](http://www.ncbi.nlm.nih.gov/pubmed/5541744).
## Implementation
### Functions
#### Stimulation
* `initiate_procedure` returns an empty result data frame
* `append_results` appends the last result and returns the next value for stimulation
#### Results and visualisation
* `estimate_reversals` returns an estimate of the value based on last `num` of reversals
* `process_results` calculates procedure values and results
* `midpoints` returns the midpoints for each run
* `runs` returns the start and finish point of each run in results
* `plot_results` plots the procedure results in the same format as the original Levitt paper
* `reversals` return the location and value of reversals
## Example
Recreate figure 5 from Levitt 1971.
```python
# Figure 4 Levitt 1971
resp1 = [CORRECT, CORRECT, INCORRECT, INCORRECT, INCORRECT, INCORRECT,
CORRECT, CORRECT, INCORRECT, INCORRECT, INCORRECT, CORRECT,
CORRECT, CORRECT, CORRECT, CORRECT, INCORRECT, INCORRECT,
INCORRECT, CORRECT, CORRECT, INCORRECT, INCORRECT, INCORRECT]
# Figure 5 Levitt 1971
resp2 = [CORRECT, CORRECT, CORRECT, CORRECT, INCORRECT, CORRECT, INCORRECT,
INCORRECT, CORRECT, INCORRECT, CORRECT, CORRECT, CORRECT, CORRECT,
CORRECT, INCORRECT, INCORRECT, INCORRECT, CORRECT, CORRECT,
CORRECT, CORRECT, CORRECT, CORRECT]
stim1 = ud.UpDownMethod(down=1, up=1, stepSize=1, initialValue=0)
stim2 = ud.UpDownMethod(down=2, up=1, stepSize=1, initialValue=0)
for resp in resp1:
stim1(resp)
for resp in resp2:
stim2(resp)
ud.plot_results(stim1.results)
ud.plot_results(stim2.results)
```
