CGSC170 Chapter Notes - Chapter 4.5 pt 3: Local Field Potential, Visual Cortex, Electrophysiology

• School: University of Delaware
• Department: Cognitive Science
• Course: CGSC170
• Professor: Kaja Jasinka

Document Summary

Sends signal to other neurons to which it is connected. They only fire when the level of internal activity reaches a particular. There can be plenty of activity in a neuron even when that neuron does not. Does bold signal correlate to input of neurons or with outputs. Niko logothetis compared strength of bold signal against different measures of neural activity in the monkey primary visual cortex. Use microelectrodes to measure input neural and output neural activity. Measure the firing rates of single neurons and small populations of neurons near the electrode tip. Measured input neural activity through the local field potential. Lfp is the electrophysiological signal believed to be correlated with the sum of inputs to neurons in a particular area. Conclusion- bold contrast is highly correlated with the lfp than with the firing activity of neurons. In many cases, lfp will be correlated to firing activity of neurons.