Abstract
Point process modeling of neural spike recordings has the potential to capture with high specificity the information contained in spike time occurrence. In Brain-Machine Interfaces (BMIs) the neural tuning characteristic assessed from neural spike recordings can distinguish neuron importance in terms of its modulation with the movement task. Consequently, it improves generalization and reduces significantly computation in previous decoding algorithms, where models reconstruct the kinematics from recorded activities of hundreds of neurons. We propose to apply information theoretical analysis based on an instantaneous tuning model to extract the important neuron subsets for point process decoding on BMI. The cortical distribution of extracted neuron subsets is analyzed and the statistical decoding performance using subset selection is studied with respect to different number of neurons and compared to the one by the full neuron ensemble. With much less computation, the extracted importance neurons provide comparable kinematic reconstructions compared to the full neuron ensemble. The performance of the extracted subset is compared to the random selected subset with same number of neurons to further validate the effectiveness of the subset-extraction approach.
| Original language | English |
|---|---|
| Pages (from-to) | 781-790 |
| Number of pages | 10 |
| Journal | Neural Networks |
| Volume | 22 |
| Issue number | 5-6 |
| DOIs | |
| State | Published - Jul 1 2009 |
| Externally published | Yes |
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Keywords
- Brain-Machine Interfaces
- Information theoretical analysis
- Kinematics decoding
- Neuron importance
ASJC Scopus subject areas
- Artificial Intelligence
- Cognitive Neuroscience
Cite this
Ascertaining neuron importance by information theoretical analysis in motor Brain-Machine Interfaces. / Wang, Yiwen; Principe, Jose C.; Sanchez, Justin C.
In: Neural Networks, Vol. 22, No. 5-6, 01.07.2009, p. 781-790.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ascertaining neuron importance by information theoretical analysis in motor Brain-Machine Interfaces
AU - Wang, Yiwen
AU - Principe, Jose C.
AU - Sanchez, Justin C.
PY - 2009/7/1
Y1 - 2009/7/1
N2 - Point process modeling of neural spike recordings has the potential to capture with high specificity the information contained in spike time occurrence. In Brain-Machine Interfaces (BMIs) the neural tuning characteristic assessed from neural spike recordings can distinguish neuron importance in terms of its modulation with the movement task. Consequently, it improves generalization and reduces significantly computation in previous decoding algorithms, where models reconstruct the kinematics from recorded activities of hundreds of neurons. We propose to apply information theoretical analysis based on an instantaneous tuning model to extract the important neuron subsets for point process decoding on BMI. The cortical distribution of extracted neuron subsets is analyzed and the statistical decoding performance using subset selection is studied with respect to different number of neurons and compared to the one by the full neuron ensemble. With much less computation, the extracted importance neurons provide comparable kinematic reconstructions compared to the full neuron ensemble. The performance of the extracted subset is compared to the random selected subset with same number of neurons to further validate the effectiveness of the subset-extraction approach.
AB - Point process modeling of neural spike recordings has the potential to capture with high specificity the information contained in spike time occurrence. In Brain-Machine Interfaces (BMIs) the neural tuning characteristic assessed from neural spike recordings can distinguish neuron importance in terms of its modulation with the movement task. Consequently, it improves generalization and reduces significantly computation in previous decoding algorithms, where models reconstruct the kinematics from recorded activities of hundreds of neurons. We propose to apply information theoretical analysis based on an instantaneous tuning model to extract the important neuron subsets for point process decoding on BMI. The cortical distribution of extracted neuron subsets is analyzed and the statistical decoding performance using subset selection is studied with respect to different number of neurons and compared to the one by the full neuron ensemble. With much less computation, the extracted importance neurons provide comparable kinematic reconstructions compared to the full neuron ensemble. The performance of the extracted subset is compared to the random selected subset with same number of neurons to further validate the effectiveness of the subset-extraction approach.
KW - Brain-Machine Interfaces
KW - Information theoretical analysis
KW - Kinematics decoding
KW - Neuron importance
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U2 - 10.1016/j.neunet.2009.06.007
DO - 10.1016/j.neunet.2009.06.007
M3 - Article
VL - 22
SP - 781
EP - 790
JO - Neural Networks
JF - Neural Networks
SN - 0893-6080
IS - 5-6
ER -