Chapter 14 Flashcards
Cerebrum
conscious and subconscious regulation of skeletal muscle contractions
sends motor commands to the opposite side of the body (left cerebral hemisphere sends to right side)
Thalamus
relays and processes sensory information
hypothalamus
controls emotions and hormone production
Fibers of the white matter of the cerebrum:
association fibers, commissures, and projection fibers
association fibers
interconnect cortical areas within the same hemisphere
commissures
interconnect and permit communication between the cerebral hemispheres
projection fibers
connect cerebral cortex to diencephalon, brainstem, cerebellum, and spinal cord
Nuclei of gray matter
basal nuclei: caudate nucleus and lentiform nucleus
Basal Nuclei
subconscious adjustment and modification of voluntary motor commands; coordination of learned movement patterns (walking, lifting).
Cerebrum sends and receives:
motor commands somatosensory information from the opposite side of the body.
Left cerebral hemisphere:
reading, writing, and math
speech and language
decision making
right cerebral hemisphere
analyze sensory information
recognition of faces and voice inflections
Alpha waves
normal resting
moderate frequency and amplitude
beta waves
intense concentration
High frequency, moderate amplitude
theta waves
children and frustrated adults
Less frequency than alpha, moderate amplitude