Table 4.
Brain Regions Exhibiting Significant “Searching versus Goal-seeking” Oscillatory Effects
| Delta | Theta | Alpha | Beta | Gamma | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| S > G | G > S | S > G | G > S | S > G | G > S | S > G | G > S | S > G | G > S | All Cells | |
| Electrode Counts | |||||||||||
| Right | |||||||||||
| Hippocampus | 4 | 0 | 4 | 0 | 3 | 0 | 3 | 0 | 0 | 0 | 57 |
| Temporal | 32** | 0 | 46** | 0 | 18** | 0 | 17** | 0 | 14** | 0 | 296 |
| Parietal | 5 | 0 | 8 | 4 | 4 | 4 | 3 | 4 | 8* | 0 | 152 |
| Frontal | 27** | 0 | 52** | 2 | 18* | 3 | 7 | 7 | 7 | 1 | 270 |
| Occipital | 1 | 0 | 5 | 0 | 4 | 2 | 2 | 3 | 1 | 0 | 61 |
| All | 69** | 0 | 105** | 6 | 47** | 9 | 32* | 15 | 30** | 1 | 836 |
| Left | |||||||||||
| Hippocampus | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 27 |
| Temporal | 19** | 0 | 13* | 3 | 10* | 1 | 10* | 2 | 3 | 2 | 294 |
| Parietal | 4 | 0 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 36 |
| Frontal | 12** | 0 | 15** | 0 | 13** | 0 | 4 | 1 | 1 | 1 | 229 |
| Occipital | 2 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 25 |
| All | 37** | 0 | 33** | 3 | 25* | 1 | 16* | 4 | 4 | 3 | 611 |
| Searching-Effect Laterality | |||||||||||
| Hippocampus | – | – | – | – | – | ||||||
| Temporal | – | Right** | – | – | Right* | ||||||
| Parietal | – | – | – | – | – | ||||||
| Frontal | – | Right* | – | – | – | ||||||
| Occipital | – | – | – | – | – | ||||||
| All | – | Right** | – | – | Right** | ||||||
Counts of electrodes exhibiting each effect are shown separately for each frequency band and ROI. The “searching > goal-seeking” effect is denoted by “S > G” and the “goal-seeking > searching” effect is denoted by “G > S”. In the Electrode counts section of the table, at each region/frequency band, the number of electrodes exhibiting the S > G effect was compared with the number of electrodes exhibiting the G > S effect using a χ2 test. The “All Cells” column of the table indicates the total number of electrodes observed in each region. In the Searching-effect laterality section of the table, for region-frequency group, the counts of electrodes exhibiting the (S > G) effect were compared between the left and the right hemispheres (χ2 test). When this test indicated a significant difference, the appropriate table entry indicates the hemisphere where the effect was more prevalent.
p < .05.
p < .001.