Three major types of insect herbivores

Phloem feeders, such as aphids and whiteflies, cause little damage to the epidermis and mesophyll cells. Phloem feeders insert their narrow stylet, which is an elongated mouthpart, into the phloem sieve tubes of leaves and stems. 

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#Unit 13. Methods in Biology

Electrocorticography, involving surgical placement of electrodes, is sometimes called "intracranial EEG". 

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#Unit 13. Methods in Biology

EEG waves are not action potentials.

The EEG waves originate from alternating excitatory and inhibitory synaptic potentials that produce sufficient extracellular current flow across the cortex.

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#Unit 13. Methods in Biology

International 10–20 system

Internationally recognized method to describe and apply the location of scalp electrodes in EEG.

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#Id: 4510

#Unit 13. Methods in Biology

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#Unit 13. Methods in Biology

CSIR-PYQ Concept

Each electrode placement site has a letter to identify the lobe, or area of the brain: 

pre-frontal (Fp), frontal (F), temporal (T), parietal (P), occipital (O), and central (C).

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#Unit 13. Methods in Biology