Closest 10-10 Electrode position to each Brodmann area

Closest Brodmann area to each 10-10 electrode

ELECTRODE / SITE

Here is the anatomical gyral names of the various Brodmann areas. Recall that there is a Brodmann area in both left and right hemisphere, the homologues. Gyrus (Functional name)

EXCLUDED FROM SKIL BRODMANN MONTAGE due to small size and distance from scalp

FP1 covers Brodmann area 10 on the front left side of the frontal lobe. This is part of the prefrontal cortex, that highly developed part of the brain which sets us apart from other mammals since it is responsible for the execution of cognitive tasks. Complex behaviours and simultaneous mental activities need a kind of working memory that keeps track of running tasks in either pending states or executive states. For most cognitive functions information needs to be retrieved after completion of another task. The prefrontal cortex co-ordinates all of this mental traffic and shows clear elevation in beta levels when performing calculative tasks, logical puzzles or other intellectual questions. FP2 covers the right side of the prefrontal cortex. F7 and F8 cover parts of the frontal cortex. The frontal cortex is involved in integrating sensory information with data retrieval from memory locations. This way new sensory information can be compared with earlier perceptions. Area 45 – which is one part of Broca’s area, a brain centre dedicated to language production – at position F8 is also believed to recover semantic information and to evaluate that information in the light of the current context.

C3 and C4 are located on top of the primary somatosensory cortex, in the parietal part of the cortex. This is a clearly defined strip on top of the brain responsible for processing touch and sensation as well as keeping track of the location of your body parts (proprioception).

The two electrodes at the back of the headset, O1 and O2 for the occipital area of the cortex, cover the secondary visual cortex which is processing information relating to visual association. Cells are tuned to simple properties such as orientation, spatial frequency, and color. Depending on the exact positioning of the headset – which is likely to be slightly different per individual – they might also track the primary visual cortex from which the information is forwarded to the secondary visual cortex. Primary cortex here corresponds to Brodmann area 17 and the secondary to area 18. The connectivity between primary and secondary cortices is important for visual memory.

1 2 & 3 Bilateral

1 2 & 3 L

1 2 & 3R (Primary motor cortex - Precentral gyrus)

4

4L

4R

(Secondary sensorimotor cortex )

5

5L

5R

(Premotor cortex or Lateral Premotor Area (PMA); Supplementary Motor Area (SMA))

6

6L

6R

(Superior parietal lobule)

7

7L

7R

(Lateral and medial supplementary motor area)

8

8L

8R

(Middle frontal gyrus)

9

9L

9R

10

10L

10R

(Gyrus rectus)

11

11L

11R

12

12L

12R (Insular Cortex)

13

13L

13RBold Text (Primary visual cortex)

17

17L

17R

(Secondary visual cortex -Middle occipital gyrus)

18

18L

18R

(Secondary visual cortex - Inferior occipital gyrus)

19

19L

19R

(Inferior temporal, Fusiform and Parahippocampal gyri)

20

20L

20R

(Middle temporal gyrus)

21

21L

21R

(Superior Temporal Gyrus - Part of Wernicke's area)

22

22L

22R

(Posterior cingulate gyrus)

23

23L

23R

(Anterior cingulate gyrus)

24

24L

24R

(Subgenual gyrus)

25

25L

25R

26

26L

26R (Hippocampal areas - Part of medial temporal lobe) 27 * Pattern separation (overlapping representations are made less similar) * Face memory * Picture memory * Auditory memory(a) * Emotions * Categories * Visual memory * Autobiographical memory * Olfactory and gustatory memory * Recognition, recall and retrieval * Procedural memory consolidation * Memory for novelty * Memory for negative stimuli * Face-based emotional perception * Erotica * Experience stress * Congruent facial movements (mirror neurons) * Craving * Hunger * Embarassment * Spatial * Landmarks (a, b, c ) * Novelty * Past and future events * Anticipating regret * Insight * Decision-making 27L * Categorization (a, b, c,) 27R

28

28L

28R

29

29L

29R

30

30L

30R

31

31L

31R

32

32L

32R

33 33L 33R 34 34L 34R 35 35L 35R 36 36L 36R (Posterior inferior temporal gyrus, middle temporal gyrus, and fusiform gyrus)

37

37L

37R

(Temporal pole)

38

38L

38R

(Angular gyrus; Part of Wernicke's area)

39

39L

39R

(Inferior parietal lobule - Supramarginal gyrus)

40

40L

40R

(Primary auditory cortex - Heschl's gyrus)

41

41L

41R (Secondary auditory cortex)

42

42L 42R (Subcentral area)

43

43L

43R (Inferior frontal gyrus - Pars opercularis)

44

44L

44R

(Inferior frontal gyrus - Pars triangularis)

45

45L

45RBold Text

(Medial frontal gyrus)

46

46L

46R (Inferior frontal gyrus - Pars orbitalis) 47

47L

47R