Making sense of time: The embodied nature of human abstraction - PowerPoint PPT Presentation

Making sense of time: The embodied nature of human abstraction � Rafael E. Núñez Embodied Cognition Lab Department of Cognitive Science University of California, San Diego

… at my hotel room in Tokyo … susumu: advance, modoru: go back move forward return, backward

… some episodes in Homo Sapiens’ life …

Contents Everyday abstraction and Spatial construals of 1. � Time: The role of language The psychological reality of Time construals: 2. � Priming experiments Universals, and cultural variations: The Aymara 3. � and the Yupno way Exploring neural basis: an fMRI study 4. � Conclusions 5. �

Spatial construals of Time � � Investigating conceptualization (rather than perception and psychophysics) � � Cognitive Linguistics � � Waaaay back in the 50s … � � The week ahead of us … � � We are coming to the end of the quarter … � � It is 20 minutes ahead of 1 o’clock � � Halloween is almost here � � Spring follows winter … � � … (and, beyond words: illustrations)

Spatial construals of Time

Time As Unidimensional Space An initial taxonomy Two main conceptual metaphors (Criterion: What � � moves? ) (Clark, 1973, Lakoff, 1993; Gentner, 2001) “Ego-moving” 1. � We’re coming to the end of the year � � “Time-moving” 2. � Thanksgiving is approaching � �

1.- Ego-moving Mapping Source Domain Target Domain 1-D Space Time future front of ego behind ego past present/now ego’s location ego’s motion passing of time

2.- Time-moving Mapping Source Domain Target Domain 1-D Space Time future front of ego behind ego past present/now ego’s location motion of objects passing of time

Moving-Ego, Moving-Time? Further refinement � � The class meetings are too close together � � [no motion] � � It is 20 minutes ahead of 1pm � � [Ego is not the RP] � � Spring follows Winter � � [no Ego, no “Now”, no present]

“ Ahead ”? The week ahead of us � � It is 20 minutes ahead of 1pm � �

“ Ahead ” … of WHAT? Reference Point! (not motion per se) � � “Ego-RP” 1. � The week ahead of US (LATER) � � “Time-RP” 2. � It is 20 minutes ahead of 1PM (EARLIER) � �

Time-RP Mapping Source Domain Target Domain 1-D (Ego-free) Space Time earlier (than Now) front of object later (than Now) behind object (present/now) (some object) Moore, 1999 Núñez, 1999 Núñez & Sweetser, 2006

Examples of Time-RP “ Spring follows winter ” � � “ Before/After 1945 ” � � FRONT is mapped with EARLIER (relative to � � object) The day be fore yesterday � � Avant -hier � � Antes de ayer � � BACK is mapped with LATER (relative to object) � � Con posterior idad a 1950 � �

Time As Unidimensional Space: Time-RP mapping “The day be fore yesterday” FRONT is mapped with EARLIER before yesterday � yesterday � today � fore � posterior � (motion determines orientation) � � � “Con posterior idad a 1950” BACK is mapped with LATER 1949 � 1952 � 1953 � 1950 � 1951 � posterior � posterioridad a 1950 �

A refined taxonomy Criterion: Reference Point Núñez & Sweetser, 2006 Núñez, Motz, & Teuscher, 2006

Summary: Spatial Construals of Time � � An essential construal of chronological experience (time) is built through a fundamental conceptual metaphor: � � Time AS Unidimensional Space � � Its general form seems to be universal: construals are indeed Spatial � � It has (at least) two forms � � 1.- Ego-RP (front/future – back/past) � � 2.- Time-RP (front/earlier – back/later) � � Inferences (“truth”) are relative to the mappings

Aymara people

Where do Aymara people live?

South American Andes Highlands

Aymara: Expressions regarding the past ancha nayra pachana Morpheme by morpheme gloss: ancha a lot nayra eye, sight, front pacha time -na in, on, at Literal translation: A lot eye/front time-at Meaning: (At a) long time ago

Aymara: Expressions regarding the future akata q”iparu Morpheme by morpheme gloss: aka here , this -ta from q”ipa back, behind -ru to, towards Literal translation: Here/this-from back-to Meaning: From now on

Spatial construals of time in Aymara The crucial question � � Lexical and metaphorical evidence of � � Time AS Unidimensional Space metaphor � � But … In Aymara, is the underlying mapping Ego-RP or Time-RP?

Spatial construals of time in Aymara The crucial question � � If the mapping is Time-RP then it simply operates like our “ahead” (front/Earlier – back/Later) � � Many “exotic” languages thought to be counter- universal turned out to be like English, after the Time-RP distinction (Moore, 1999; Núñez & Sweetser, 2006). � � If the mapping is indeed Ego-RP then Aymara would be a counterexample to the universality of Ego orientation!

Spatial construals of time in Aymara How to decide? � � Because of grammatical constraints in Aymara there is no way to answer to the previous questions with purely linguistic evidence (e.g., gramatical, lexical, …) (Hardmann, 2001) � � There are no clear and unambiguous cases such as � � “The week ahead of us ” (meaning future in front of EGO rather than of another time) Spontaneous gestures? �

What can we learn from Gestures? A detailed study of Gestures can help � � answering the previous questions Gesture-speech co-production is universal � � Astonishingly close speech-gesture co- � � production Provide rich information about deixis, manner, � � and RPs (often complementary to speech) Preservation and construction of semantics � � (iconics and metaphorical gestures): built-in

… más allá antes …

“From last year [From last year …] Del año pasado … to this year”

“From last year [… to this year] … a este año to this year”

And much more … Nayra mara … antiguo [old] Aka maran [this year] Q”ipa timpun [Future times]

Time As Unidimensional Space: Aymara Ego-RP mapping Source Domain Target Domain 1-D Space Time future front of ego past behind ego present ego’s location Converging lexical, metaphorical, AND gestural evidence �

Saggital Past gestures Aymara participants producing sagittal past gestures (n=15) 1 0.9 0.8 0.7 Percentage 0.6 0.5 0.4 0.3 0.2 0.1 0 Núñez & Sweetser, 2006 Aymara - Castellano Andino speakers (no Spanish speakers (bilinguals or monolinguals) grammatical Spanish) Language Proficiency Past-Front only Past-Behind at least once Fisher’s, p = 0.035

BBC A counter-universal! World GEO Wissen The New York Times Jornal do Brasil Science Taipei Times Pour la Science

Aymara: Why this pattern? � � Overemphasis on visual perception as source of knowledge � � Strong use of evidentials, including in Castellano Andino � � “Knowing is seeing” � � Past is known and visible � � Future is unknown, out of the visual field

Spatial construals of time: Another crucial question � � Can the source domain (space) have other forms? � � Other frames of reference? � � Not Ego-centered? � � Not based on moving sequences? � � … Geo-centric? � � Yes: People from the Yupno valley � � (Núñez, Cooperrider, and Wassmann, submitted) � � Lexical hints: usadon = uphill; tomorrow

Looking for neural basis: Anatomical hypotheses � � What neural populations dealing with body- centered space may be recruited for specific temporal meaning (e.g., Ego-RP)? � � Ventral Intraparietal area (VIP) � � in the intraparietal sulcus � � Polysensory Zone (PZ) � � in the precentral gyrus Macaque monkey brain

Making sense of time: The embodied nature of human abstraction - PowerPoint PPT Presentation

Making sense of time: The embodied nature of human abstraction Rafael E. Nez Embodied Cognition Lab Department of Cognitive Science University of California, San Diego at my hotel room in Tokyo susumu: advance, modoru: go

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