Please find the answer to all three questions The purpose of averaging together multiple trails in the ERP technique is to Identify where in the 3D brain the electrical signal is coming from INcrease the signal to noise ratio Increase the temporal resolution Reduce peak latency ------------------------------------------- Which technique uses a laser to activate light sensitive ion channel at will Reversible lesions Optogenetics DREADDS TMS ------------------------------------------- Cones are specialized for perceiving ___; rods are specialized for perceiving ___ Low levels of light; color and detail Color and detail: low levels of light Detail: color and night vision Color and low levels of light: detail
Please find the answer to all three questions
The purpose of averaging together multiple trails in the ERP technique is to
Identify where in the 3D brain the electrical signal is coming from
INcrease the signal to noise ratio
Increase the temporal resolution
Reduce peak latency
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Which technique uses a laser to activate light sensitive ion channel at will
Reversible lesions
Optogenetics
DREADDS
TMS
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Cones are specialized for perceiving ___; rods are specialized for perceiving ___
Low levels of light; color and detail
Color and detail: low levels of light
Detail: color and night vision
Color and low levels of light: detail
ERP: ERP (event-related potential) is basically an event related potential which measures the response of our brain based on sensory, cognitive and motor events. (for Q1, option 1st is the correct answer)
Optogenetics: The method is based on the technique of neuromodulation, which combines optics and genetics so that the activity of the neurons can be controlled. (for Q2, option 2 is the correct answer).
Rods are responsible for scotopic vision and cones are for photopic vision. (for Q3, option 3 is the correct answer)
It is based on electrophysiologic response, which is a non-invasive method of monitoring brain activity. ERP can be measured by electroencephalography by placing the electrodes on the scalp, which is able to detect many ongoing activities in the brain. For only one single stimulus, the response is not that visible in the EEG, so the experimenter needs to take many trials of stimulus and take the average of the trials so that random brain activity can be eliminated and the relevant waveform remains which is known as ERP. Various kinds of background noise need to be eliminated that interfere with the actual ERP, therefore the signal of interest which needs to be investigated under ERP requires the removal of background noise.
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