Figure 1
Experimental procedure. A) Participants extended their right arm (blindfolded) to establish their peripersonal space. B) They were reminded to keep this posture in mind when making their reachability judgments. C) Stimuli from different categories were presented at seven distinct positions; position four was aligned with the maximum extension of the right hand. D) Yes or no responses were performed by the left hand while the right hand remained stationary next to the keyboard below the table.
Table 1
Stimulus characteristics taken from Blechert et al.’s (2014) database.
| FOOD CATEGORIES | TOTAL CALORIES | VALENCE RATINGS | OBJECT SIZE | BRIGHTNESS | CONTRAST | COMPLEXITY |
|---|---|---|---|---|---|---|
| High Calorie/High Valence | 490.52 | 56.51 | .325 | 37.52 | 56.61 | .087 |
| High Calorie/Neutral Valence | 490.26 | 41.04 | .326 | 36.48 | 50.82 | .082 |
| Low Calorie/High Valence | 71.47 | 62.95 | .311 | 34.29 | 49.13 | .077 |
| Low Calorie/Neutral Valence | 95.52 | 43.74 | .311 | 29.43 | 53.77 | .088 |
[i] Note: Total calorie values expressed in Kcal, valence ratings from 1 (very low) to 100 (very high), object size (the proportion of non-white pixels relative to total number of pixels), brightness (the luminance of all non-white pixels of the grey-scale image and the white background), contrast (the SD of luminance across all non-white pixels of the gray-scale image), and complexity (for definition please see Blechert et al., 2014).
Figure 2
Mean scores of the perception of subjective reachability limit for each food category (calorie and valence) as a function of hungry and satiated. 0 (zero) indicates the true value of the maximal extension of the arm. Positive values indicate that the limits of reachability were further out, that is, peripersonal space was increased. Standard error (SE) shown as vertical lines.
Figure 3
Topography of maximal amplitudes of the P1 component between 116 and 140 ms in hungry and satiated conditions. Marked are the electrodes of the P1 ROI (70,74,75,82,83).
Figure 4
Topography of maximal amplitudes of the Late Positive Component between 300 and 548 ms in hungry and satiated conditions; marked are the electrodes used for data analysis (59-60-62-65-66-67-70-71-72-75-76-77-83-84-85-90-91).
Figure 5
Mean subjective reachability limits for each food category (calorie and valence) as a function of hungry and satiated. Conventions as in Figure 2.
Figure 6
ERP waveforms, pooled within the P1 ROI, in hungry and satiated condition in far and near space. Marked is the interval of the P1 amplitude analysis.
Figure 7
Mean amplitude of LPC in hungry and satiated condition in far and near space. Pooled ERPs electrodes from the parieto-occipital area (59-60-62-65-66-67-70-71-72-75-76-77-83-84-85-90-91). Marked is the interval of the LPC amplitude analysis.