Characterizing operant hyperactivity in the Spontaneously Hypertensive Rat

Table 1 Hypotheses of VI performance with lowest ΔAICc.

Hypothesis	c	RSS	ΔAICc
Epoch 1 (PND 58-62)
R_{e SHR}= R_{e WIS}	36	306.78	0.00
None	37	306.12	5.49
k _WIS = k _WKY	36	458.24	36.11
k_SHR = k_WIS, R_{e WIS}= R_{e WKY},	35	496.05	37.78
k_SHR = k_WIS	36	495.73	43.19
Epoch 2 (PND 89-93)
None	37	581.35	0.00
R_{e WIS}= R_{e WKY}	36	738.84	15.89
k_SHR = k_WIS, R_{e WIS}= R_{e WKY},	35	837.20	21.67
k_SHR = k_WIS	36	807.35	23.87
R_{e SHR}= R_{e WIS}	36	904.42	34.09

Note. The label of each hypothesis stipulates the constraints on mean parameter estimates. c is the number of free parameters in each hypothesis; RSS is the residual sum of squares from model fitting. For all hypotheses, the number of observations was n = 90. See Equation 2 and text for computation of ΔAICc. Hypotheses are arranged according to ΔAICc within each epoch. Hypotheses with ΔAIC = 0 were selected for parameter estimation.

ISSN: 1744-9081