Activation and disruption of a neural mechanism for novel choice in monkeys

. Author manuscript; available in PMC: 2021 Jul 19.

Published in final edited form as: Nature. 2021 Jan 6;591(7849):270–274. doi: 10.1038/s41586-020-03115-5

GLM 1:	BOLD = β₁ MAIN + β₂ V_DIF + β₃ V_SUM + β₄ LOG_RT + p₅ SIDE + β₆
	NO_RESP + β₇ POS_OUT + β₈ NEG_OUT + β₉ REW + β₁₀ LEFT_INST + β₁₁
	RIGHT_INST + β₁₂ JUICE_INST + β_13…25 MOTION + β_26…n LOWQ_VOLS

MAIN	Regressor representing the main effect of decision (boxcar with onset 1000 ms before response and duration 500 ms).
V_DIF	Parametric regressor representing the value difference (chosen minus unchosen option value). This is a positive number if the subject makes an optimal choice and negative otherwise.
V_SUM	Value sum.
LOG_RT	Logarithm of response time.
SIDE	Response side, left or right.