Fig. 3.

Using Laplace transform (Johnston, 2006; Stein et al., 2019) and the fitted parameters T_1strN2⁻¹ and β_N2, probability distribution densities of T_1N2⁻¹s were constructed for each sample. These distributions, which are associated with the rotational diffusion of ASL in IMs, are represented by thin gray lines. Rotational diffusions of spin-lattice relaxation rates of ASL in cortical and nuclear LLMs are characterized by a single T_1N2⁻¹ and, for both types of membrane, these distributions are depicted by single lines (delta functions) at T_1N2⁻¹, which are equal to 0.529 μs⁻¹ and 0.367 μs⁻¹ for cortical and nuclear LLMs, respectively. The rate percentiles were determined from cumulative probability distributions by integrating probability density distributions [First]. The whiskers in Fig. 3 extend from the 5^th to 95^th percentiles of all possible rates in a given distribution, the boxes extend from the 25^th to 75^th percentiles, and the dashed lines represent the 50^th percentiles of cumulative probability distributions.