Crossmodal Links between Vision and Touch in Spatial Attention: A Computational Modelling Study

Table 1

Settling time (Ts) of the bimodal neuron (mean ± std) in response to tactile and visual targets on both sides, in the four examined conditions, and results of two-tailed paired t-tests on tactile-minus-visual differences and unattended/uncued side-minus-attended/cued side differences (ns: nonsignificant: ^∗𝑃<.05; ^∗∗𝑃<.01; ^∗∗∗𝑃<.01).

Condition A
	One side	Other side	Difference
Tactile	𝑇𝑠=41.9±1.7 ms	𝑇𝑠=41.5±3.9 ms	Δ=−0.44±3.7 ms(ns)
Visual	𝑇𝑠=39.8±3.3 ms	𝑇𝑠=40.3±4.0 ms	Δ=0.48±4.7 ms (ns)
Difference	Δ=2.12±3.4 ms (ns)	Δ=1.2±4.86 ms (ns)
Condition B
	Attended side	Unattended side	Difference
Tactile	𝑇𝑠=24.1±1.1 ms	𝑇𝑠=52.5±11 ms	Δ=28.36±11 ms^***
Visual	𝑇𝑠=25.4±3.8 ms	𝑇𝑠=54.8±13 ms	Δ=29.44±12.5 ms^***
Difference	Δ=−1.32±3.7 ms(ns)	Δ=−2.4±18.5 ms(ns)
Condition C
	Attended side	Unattended side	Difference
Tactile	𝑇𝑠=10.6±0.7 ms	𝑇𝑠=56.4±8 ms	Δ=45.8±8.6 ms^***
Visual	𝑇𝑠=26.7±1.6 ms	𝑇𝑠=53±11 ms	Δ=26.3±11.6 ms^***
Difference	Δ=−16.2±2.11 ms^***	Δ=3.4±13.4 ms (ns)
Condition D
	Cued side	Uncued side	Difference
Tactile	𝑇𝑠=32.9±1.7 ms	𝑇𝑠=58.5±6.9 ms	Δ=25.6±8.1 ms^***
Visual	𝑇𝑠=34.1±1.2 ms	𝑇𝑠=56.1±9.3 ms	Δ=22±10.3 ms^***
Difference	Δ=−1.2±2.16 ms(ns)	Δ=2.4±12.5 ms(ns)