Average absolute value of the slopes of the regression lines fitting angular values for each articulations' pair at different epochs of normalized movement time.

<p>Mean standard errors are reported in parentheses.</p><p><b>Notes.</b> Only significant results are reported (<i>p<</i>.01, <i>FDR</i> correction). OL = Odourless air- Large target; SL = ‘Small’ odour -Large target; OS = Odourless air-Small target; LS = ‘Large’ odour-Large target.</p

Odour-target combination for each experimental condition.

<p>From left to right columns report the number of trials for each odour/target combination, the type of odour, the type of target, and the experimental conditions.</p

Schematic representation of the set-up and stimuli of Experiment 1.

<p>Left and right panels represent uncrossed and crossed arm posture conditions, respectively. Please note that the objects shown and their displacement are illustrative and do not reflect those actually used.</p

Stimuli used in the study.

a<p>Objects are listed in alphabetical order.</p

Time course of finger motion during reaching for the large target either in the absence or in the presence of an odour evoking a large object.

<p>Each trace corresponds to the average angular excursion of a representative subject (Subject 15) for the <i>mcp</i> joint of the thumb and the <i>pip</i> joint of the index, middle, and ring fingers when performing the ‘OL’ (black squares) and the ‘LL’ (blue squares) conditions. Positive values correspond to finger flexion whereas negative values correspond to finger extension. OL = Odourless air-Large target; LL = ‘Large’ odour-Large target.</p

Time course of abduction angle between fingers during reaching in the absence of olfactory stimuli.

<p>Each trace corresponds to the average abduction angle for the ‘OL’ (black squares) and the ‘OS’ (white circles) conditions. Bars represent mean standard error. Increase in negative values correspond to bigger abduction (i.e., increase of digits' angular distance). Asterisks indicate significant results (<i>p<</i>.05) for the comparisons between the ‘OL’ and the ‘OS’ conditions at different epochs of normalized movement time. OL = Odourless air-Large target; OS = Odourless air-Small target.</p

Results of Experiment 1 for left vs. right judgments.

<p>Graphical representation of the interaction <i>Response</i> (left vs. right) by <i>Arm Posture</i> (uncrossed vs. crossed) on Reaction Times. Bars represent standard errors of the means. Asterisks indicate significance for the main contrasts of interest (<i>p</i><05).</p

Schematic representation of the set-up and stimuli adopted in Experiments 2 and 3.

<p>In Panel A, the four experimental conditions of Experiment 2: participant uncrossed/co-experimenter uncrossed; participant uncrossed/co-experimenter crossed; participant crossed/co-experimenter uncrossed, and participant crossed/co-experimenter crossed. In Panel B, the four experimental conditions of Experiment 3: participant usual/co-experimenter usual posture; participant usual/co-experimenter unusual posture; participant unusual/co-experimenter usual posture, and participant unusual/co-experimenter unusual posture. Please consider that participants were asked to perform the very same task in both experiments, i.e., to judge spatial relations from the co-experimenter’s point of view.</p

The visual targets and the experimental set up.

<p>(A) The visual targets defined as ‘large’ were an apple and an orange, whereas those defined as ‘small’ were an almond and a strawberry. (B) Legends indicate the parts composing the experimental set up.</p

Time course of abduction angle between fingers during reaching for the large target either in the absence or in the presence of an odour evoking a small object.

<p>Each trace denotes average abduction angle of a representative subject (Subject 10) for the middle-ring and the ring-little fingers when performing the ‘OL’ (black squares) and the ‘SL’ (red squares) conditions. Increase in negative values correspond to bigger abduction (i.e., increase of digits' angular distance). OL = Odourless air-Large target; SL = ‘Small’ odour-Large target.</p