MEDLINE® is the source for the citation and abstract of this record.Peer reviewedPublisher PD

Adam A Pack

Allman

Baird

Brenda McCowan

Connor

David Lusseau

Deecke

Diana Reiss

Downhower

Estel Van der Gucht

Esther A Nimchinsky

Ferrer

Fleischer

Foote

Ford

Fordyce

Gazda

Geisler

Gingerich

Glezer

Guinet

Hal Whitehead

Haydon

Herman

Hooper

Janik

Joy S Reidenberg

Kang

Kesarev

Kr&ucirc

Kumar

Lefebvre

Lori Marino

Louis Lefebvre

Louis M Herman

Luke Rendell

Lusseau

Magnan

Manger

Marino

Mark D Uhen

McCowan

Mercado

Millien

Nimchinsky

Pack

Patrick R Hof

Plotnik

R. Ewan Fordyce

Reader

Reidenberg

Reiss

Rendell

Richard C Connor

Richards

Ridgway

Schenker

Schoenemann

Smith

Thompson

Tschudin

Ullian

Whiten

Wood

Xitco

Yurk

PLoS Biology

PubMed

The brain of a sperm whale is about 60% larger in absolute mass than that of an elephant. Furthermore, the brains of toothed whales and dolphins are significantly larger than those of any nonhuman primates and are second only to human brains when measured with respect to body size. How and why did such large brains evolve in these modern cetaceans? One current view of the evolution of dolphin brains is that their large size was primarily a response to social forces—the requirements for effective functioning within a complex society characterized by communication and collaboration as well as competition among group members. In such a society, individuals can benefit from the recognition of others and knowledge of their relationships and from flexibility in adapting to or implementing new behaviors as social or ecological context shifts. Other views focus on the cognitive demands associated with the use of echolocation. Recently, Manger made the controversial claim that cetacean brains are large because they contain an unusually large number of thermogenic glial cells whose numbers increased greatly to counteract heat loss during a decrease in ocean temperatures in the Eocene-Oligocene transition. Therefore, he argues, cetacean brain size could have evolved independently of any cognitive demands and, further, that there is neither neuronal evidence nor behavioral evidence of complex cognition in cetaceans. These claims have garnered considerable attention in the popular press, because they challenge prevailing knowledge and understanding of cetacean brain evolution, cognition, and behavior. We believe that the time is ripe to present an integrated view of cetacean brains, behavior, and evolution based on the wealth of accumulated and recent data on these topics. Our conclusions support the more generally accepted view that the large brain of cetaceans evolved to support complex cognitive abilities.<br/

Marino, Lori

Connor, Richard C.

Fordyce, R. Ewan

Herman, Louis M.

Hof, Patrick R.

Lefebvre, Louis

Lusseau, David

McCowan, Brenda

Nimchinsky, Esther A.

Pack, Adam A.

Rendell, Luke

Reidenberg, Joy S.

Reiss, Diana

Uhen, Mark D.

Van der Gucht, Estel

Whitehead, Hal

University of St Andrews Research Portal

Cetaceans have complex brains for complex cognition

DalSpace Institutional Repository (Dalhousie University)

The brain of a sperm whale is about 60% larger in absolute mass than that of an elephant. Furthermore, the brains of toothed whales and dolphins are significantly larger than those of any nonhuman primates and are second only to human brains when measured with respect to body size. How and why did such large brains evolve in these modern cetaceans? One current view of the evolution of dolphin brains is that their large size was primarily a response to social forces—the requirements for effective functioning within a complex society characterized by communication and collaboration as well as competition among group members. In such a society, individuals can benefit from the recognition of others and knowledge of their relationships and from flexibility in adapting to or implementing new behaviors as social or ecological context shifts. Other views focus on the cognitive demands associated with the use of echolocation. Recently, Manger made the controversial claim that cetacean brains are large because they contain an unusually large number of thermogenic glial cells whose numbers increased greatly to counteract heat loss during a decrease in ocean temperatures in the Eocene-Oligocene transition. Therefore, he argues, cetacean brain size could have evolved independently of any cognitive demands and, further, that there is neither neuronal evidence nor behavioral evidence of complex cognition in cetaceans. These claims have garnered considerable attention in the popular press, because they challenge prevailing knowledge and understanding of cetacean brain evolution, cognition, and behavior. We believe that the time is ripe to present an integrated view of cetacean brains, behavior, and evolution based on the wealth of accumulated and recent data on these topics. Our conclusions support the more generally accepted view that the large brain of cetaceans evolved to support complex cognitive abilities.Peer reviewe

St Andrews Research Repository

English

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Using information theory to assess the diversity, complexity and development of communicative repertoires.

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We believe that the time is ripe to present an integrated view of cetacean brains, behavior, and evolution based on the wealth of accumulated and recent data on these topics. Our conclusions support the more generally accepted view that the large brain of cetaceans evolved to support complex cognitive abilities

Humane Society Institute for Science and Policy

Cetaceans Have Complex Brains for Complex Cognition

MEDLINE® is the source for the citation and abstract of this record.Peer reviewe

Connor, Richard C

Fordyce, R Ewan

Herman, Louis M

Hof, Patrick R

Nimchinsky, Esther A

Pack, Adam A

Reidenberg, Joy S

Uhen, Mark D

Aberdeen University Research

R Ewan Fordyce

Directory of Open Access Journals

Cetaceans have complex brains for complex cognition.

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Generalization of same-different classiﬁ cation abilities in bottlenosed dolphins.

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Implications of the ‘initial brain’ concept for brain evolution in Cetacea.

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Spindle neurons of the human anterior cingulate cortex.

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Cetaceans have complex brains for complex cognition

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