left brainn.adj.

(In sense A.)Brit.

/ˌlɛft ˈbreɪn/, U.S.

/ˌlɛft ˈbreɪn/ (In sense B.)Brit.

/ˈlɛft ˌbreɪn/, U.S.

/ˈlɛft ˌbreɪn/

Origin: Formed within English, by compounding; originally modelled on a French lexical item. Etymons: left adj.¹, brain n.

Etymology: < left adj.¹ + brain n., originally after French cerveau gauche (1821 or earlier).

A. n.

The left hemisphere of the cerebrum; this hemisphere considered as functionally distinct from the right hemisphere.Since the mid 1970s, scientific research on brain asymmetry has been popularly and simplistically interpreted as implying that intuition and creativity are located in the right brain, and analytical logic in the left brain, and that dominance of one hemisphere is reflected in personality type.

ΚΠ

1827 G. Hayward tr. F. Magendie in F. Gold tr. X. Bichat Physiol. Res. Life & Death ii. vii. 243 (note) The left brain [Fr. cerveau gauche] was slightly inflamed and especially the plexus choroides.

1884 Knowledge 19 Sept. 229/1 There had been partial paralysis of the right side, showing how the left brain governs chiefly the motor system of the right side of the body.

1914 Dietetic & Hygienic Gaz. Dec. 556/1 Right handed people have the language centre in Broca's convolution which is in the left brain.

1979 Cedar Rapids (Iowa) Gaz. 22 July c6 The right side handles global, pictorial, sensual, emotional and musical concepts; the left brain handles the details, such as words.

2004 S. Gerhardt Why Love Matters v. 121 An active left brain is linked to positive feelings, cheerfulness and a willingness to approach others with a kind of extraverted outlook.

B. adj.

Of or relating to the left hemisphere of the cerebrum or its activity; characterized by or exhibiting modes of thought or behaviour popularly associated with this.

ΚΠ

1878 St. Louis Med. & Surg. Jrnl. 35 321 The author intimates..his belief in the right and left brain theory of Brown-Sequard.

1932 Science 3 June 10/1 Of 55 persons suffering from right-sided paralysis, indicating left brain injury, 27, or nearly half, were confused.

1977 Derrick (Oil City, Pa.) 21 July 18 Visual functions, which are controlled by the right brain, were affected [by alcohol] much sooner than left-brain functions, such as speech.

1990 C. Bepko & J.-A. Krestan Too Good for her Own Good iii. vi. 177 There was some truth to the myth that Mary was more ‘left brain’.

2014 L. Rutherford Games & Warm Ups for Group Leaders (ed. 2) viii. 120 So many of us are trained to be so judgemental and critical, self-doubting and self-negating, stuck firmly in left-brain thinking.

This is a new entry (OED Third Edition, September 2016; most recently modified version published online March 2022).

单词	left brain
释义	left brainn.adj. (In sense A.)Brit. /ˌlɛft ˈbreɪn/, U.S. /ˌlɛft ˈbreɪn/ (In sense B.)Brit. /ˈlɛft ˌbreɪn/, U.S. /ˈlɛft ˌbreɪn/ Origin: Formed within English, by compounding; originally modelled on a French lexical item. Etymons: left adj.¹, brain n. Etymology: < left adj.¹ + brain n., originally after French cerveau gauche (1821 or earlier). A. n. The left hemisphere of the cerebrum; this hemisphere considered as functionally distinct from the right hemisphere.Since the mid 1970s, scientific research on brain asymmetry has been popularly and simplistically interpreted as implying that intuition and creativity are located in the right brain, and analytical logic in the left brain, and that dominance of one hemisphere is reflected in personality type. ΚΠ 1827 G. Hayward tr. F. Magendie in F. Gold tr. X. Bichat Physiol. Res. Life & Death ii. vii. 243 (note) The left brain [Fr. cerveau gauche] was slightly inflamed and especially the plexus choroides. 1884 Knowledge 19 Sept. 229/1 There had been partial paralysis of the right side, showing how the left brain governs chiefly the motor system of the right side of the body. 1914 Dietetic & Hygienic Gaz. Dec. 556/1 Right handed people have the language centre in Broca's convolution which is in the left brain. 1979 Cedar Rapids (Iowa) Gaz. 22 July c6 The right side handles global, pictorial, sensual, emotional and musical concepts; the left brain handles the details, such as words. 2004 S. Gerhardt Why Love Matters v. 121 An active left brain is linked to positive feelings, cheerfulness and a willingness to approach others with a kind of extraverted outlook. B. adj. Of or relating to the left hemisphere of the cerebrum or its activity; characterized by or exhibiting modes of thought or behaviour popularly associated with this. ΚΠ 1878 St. Louis Med. & Surg. Jrnl. 35 321 The author intimates..his belief in the right and left brain theory of Brown-Sequard. 1932 Science 3 June 10/1 Of 55 persons suffering from right-sided paralysis, indicating left brain injury, 27, or nearly half, were confused. 1977 Derrick (Oil City, Pa.) 21 July 18 Visual functions, which are controlled by the right brain, were affected [by alcohol] much sooner than left-brain functions, such as speech. 1990 C. Bepko & J.-A. Krestan Too Good for her Own Good iii. vi. 177 There was some truth to the myth that Mary was more ‘left brain’. 2014 L. Rutherford Games & Warm Ups for Group Leaders (ed. 2) viii. 120 So many of us are trained to be so judgemental and critical, self-doubting and self-negating, stuck firmly in left-brain thinking. This is a new entry (OED Third Edition, September 2016; most recently modified version published online March 2022). < n.adj.1827
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