Experimental Study on Orientation Tuning Characteristies Based onGamma Band Power of Local Field Potential
[1]SHANG Zhigang,FENG Pingyan,LIU Xin-yu,et al.Experimental Study on Orientation Tuning Characteristies Based onGamma Band Power of Local Field Potential[J].Journal of Zhengzhou University (Engineering Science),2012,33(06):5-9.[doi:10.3969/j.issn.1671-6833.2012.06.002]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
33
Number of periods:
2012 06
Page number:
5-9
Column:
Public date:
2012-11-10
- Title:
- Experimental Study on Orientation Tuning Characteristies Based onGamma Band Power of Local Field Potential
- Keywords:
- primary visual cortex; loeal field potential; microelectrode array; orientation tuning characteristics
- CLC:
- TN911.73R338.8
- DOI:
- 10.3969/j.issn.1671-6833.2012.06.002
- Abstract:
- Orientation tuning characteristic is one of the main features in neuron from primary visual cortex’Vl ). Most studies of orientation tuning characteristics in neuron are based on the spike rating, however,spikes are suseeptible to noise and often have some questions in the detection and sorting, such as false posi.tive , false negative and so on, which affected spikes analysis results. In this paper, neuron orientation tuningcharacteristics to raster based on gamma band power of local field potential ( LFP) are studied. We found thatgamma band power carries information about the visual stimulus, and has a strong correlation with orienta.tions. The test results of simulation and experiment show that the concordance rate of gamma power and spikepreferenced orientation reaches 67,4%6 , orientation tuning reaches 87.2% ; in the case of low signal-to-noiseratio ( SNR ) , robustness of LFP is stronger than spike. Therefore, LFP gamma band power is also an effectiveway to acquire V1 orientation tuning characteristics, especially in the low SNR, which has more advantagesthan spike in orientation tuning characteristics form Vl neuron.
- References:
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Last Update:
1900-01-01