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cerebral hemisphere

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aprosodia

Overview page. Subjects: Psychology.

A flat, unmodulated speaking voice, lacking the normal range of prosody, often indicative of affective flattening or a lesion in the frontal lobe of the right cerebral hemisphere. Compare...

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brainstem

Overview page. Subjects: Medicine and Health — Science and Mathematics.

n. the enlarged extension upwards within the skull of the spinal cord, consisting of the medulla oblongata, the pons, and the midbrain. The pons and medulla are together known...

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calcarine sulcus

Overview page. Subjects: Psychology.

A deep horizontal groove that bisects the inner or medial surface of the occipital lobe of each cerebral hemisphere, running from the parieto-occipital sulcus to the back of the lobe. The...

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cerebrum

Overview page. Subjects: Medicine and Health.

The largest brain structure, comprising the diencephalon and the cerebral hemispheres, the outer layer or cerebral cortex of which controls most sensory, motor, and cognitive processes in...

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dichotic

Overview page. Subjects: Psychology.

Of or relating to the simultaneous presentation of a different auditory message to each ear via earphones, a task used to study attention and laterality of functions, based on the fact that...

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forebrain

Overview page. Subjects: Science and Mathematics — Sports and Exercise Medicine.

One of the three sections of the brain of a vertebrate embryo. The forebrain develops to form the cerebrum, hypothalamus, and thalamus in the adult. Compare hindbrain; midbrain.

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frontal lobe

Overview page. Subjects: Medicine and Health — Psychology.

The anterior part of each cerebral hemisphere, which is associated with the higher mental functions, such as abstract thought.

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handedness

Overview page. Subjects: Medicine and Health — Psychology.

n. the preferential use of one hand, rather than the other, in voluntary actions. Ambidexterity – the ability to use either hand with equal skill – is very rare. Over 95% of...

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hemisphere

Overview page. Subjects: Medicine and Health — Psychology.

Any half sphere, including either of the two cerebral hemispheres. [From Greek hemi- half + sphaira a sphere or globe]

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hemispherectomy

Overview page. Subjects: Psychology.

A radical surgical operation involving removal of the cortical structures of one cerebral hemisphere, usually leaving subcortical structures in place, to restrict the spread of tumours or...

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hemispheric encoding/retrieval asymmetry

Overview page. Subjects: Psychology.

The hypothesis that the left prefrontal cortex is disproportionately involved in encoding and the right prefrontal cortex in retrieval of episodic memories. On the basis of brain imaging...

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lateral eye movement

Overview page. Subjects: Psychology.

A deflection of gaze to the left or right, sometimes claimed to indicate an increase of activity in the contralateral cerebral hemisphere, so that a person will tend to show a rightward...

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lateral sulcus

Overview page. Subjects: Psychology.

The deep horizontal cleft in the outside wall of each cerebral hemisphere, separating the frontal lobe and part of the parietal lobe from the temporal lobe. Also called the fissure of...

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laterality

Overview page. Subjects: Psychology.

The asymmetry in functions between the two cerebral hemispheres, including handedness (1) and language functions, the left hemisphere being dominant for language in approximately 90 per...

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lobe

Overview page. Subjects: Medicine and Health — Psychology.

n. a major division of an organ or part of an organ, especially one having a rounded form and often separated from other lobes by fissures or bands of connective tissue. For...

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longitudinal fissure

Overview page. Subjects: Psychology.

The long deep groove separating the two cerebral hemispheres of the brain. Also called the interhemispheric fissure, principal sulcus, longitudinal sulcus, or sulcus principalis. [From...

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medial surface

Overview page. Subjects: Psychology.

The surface of an organ or structure situated or oriented towards the midline of the body, such as the inner surface of each cerebral hemisphere, exposed only by a midsagittal section...

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