GLOSSARY - B
Babinski response	Babinski reflex is not correct; stroking the outer border of the sole of the foot in an adult normally results in a plantar (downgoing) of the toes. The Babinski response consists of an upgoing of the first toe and a fanning of the other toes, indicating a lesion of the Pyramidal (lateral cortico-spinal) tract
Basal forebrain	Region in the inferior forebrain containing various nuclei, including cholinergic neurons of the basal nucleus, the nucleus accumbens, and the ventral putamen and ventral pallidum which are functionally part of the limbic system
Basal Ganglia (nuclei)	CNS nuclei involved in motor control, the caudate and lentiform (putamen and globus pallidus); including functionally the subthalamus and the substantia nigra
Brachium	A large bundle of fibers connecting one part with another (e.g., brachium associated with the inferior and superior colliculi of the midbrain)
Brachium of inferior colliculus	Fiber bundle connecting the inferior colliculus with the medial geniculate nucleus of thalamus; part of the auditory pathway
Brachium of superior colliculus	Fiber bundle carrying fibers from the optic nerve to the superior colliculus; associated with visual reflexes
Brainstem	Includes the medulla, pons, and midbrain
Broca’s area	Area of cortex for expressive language in the dominant (usually left) hemisphere; located in the inferior aspect of the frontal lobe, in front of the motor strip
Bulb	Referred at one time to the medulla but, in the context of "cortico-bulbar tract," refers to the whole brainstem in which the motor nuclei of cranial nerves and other nuclei are located