HENRY

Colin McGinn reviews Oliver Sack’s new book, Musicophilia: Tales of Music and the Brain

Sacks opens his book with a striking case, rather literally striking. Tony Cicoria, a forty-two-year-old orthopedic surgeon, was making a phone call to his mother when he was struck in the face by lightning. He thought he was dead immediately following the event but sustained no serious injuries and went back to work a few weeks later. But then, quite unexpectedly, he experienced an intense craving to listen to piano music—something he had never felt before. He started listening to piano music all the time, couldn’t get enough of it. Then, a little later, he started hearing piano music in his head, insistently and powerfully; he felt the need to write it down, though he had no training in musical notation. Soon he was teaching himself to play the piano, playing the tunes that came to him unbidden at all moments. He played the piano at every opportunity, driving his wife to distraction. He had a bad case of sudden-onset musicophilia, somehow triggered by the brain alterations wrought by the lightning. He had become, in effect, a completely new person, evidently because of having had his brain electrically rewired.

Continued in The Musical Mystery…

Long-term readers will know that I’ve got a number of friends working on the wonderfully intelligent New Caledonian Crow. These birds make and use a number of different tools for extracting grubs from logs. You can see my catalogue of posts on these birds here.

Recently, they’ve got a new paper out showing that the brains of these crows is large and more encephalized than other crow species (corvids) and most of the other birds studied. The paper is here: Extraordinary large brains in tool-using New Caledonian crows (Corvus moneduloides), and the abstract says:

A general correlation exists between brain weight and higher cognitive ability in birds and mammals. In birds this relationship is especially evident in corvids. These animals are well-known for their flexible behavior and problem-solving abilities, and have relatively large brains associated with a pallial enlargement.

At the behavioral level, New Caledonian crows stand out amongst corvids because of their impressive object manipulation skills both in the wild and in the laboratory. However, nothing is known about the relative size of their brains.

Here we show that NC crows have highly encephalised brains relative to most other birds that have been studied. We compared the relative brain size of five NC crows with combined data for four passerine species (7 European carrion crows, 2 European magpies, 3 European jays and 4 domestic sparrows) and found that NC crows had significantly larger brains.

A comparison only with the seven carrion crows also revealed significantly larger brains for NC crows. When compared with brain data for 140 avian species from the literature, the NC crow had one of the highest degrees of encephalisation, exceeding that of the 7 other Corvidae in the data set.

Which brings me to my tyrannical fantasy. I want to take a journey 68 million years back in time to see a Tyrannosaurus rex couple mating. What was it like? Did they trumpet and bellow and stamp their feet? Did they thrash their enormous tails? Did he bite her neck in rapture and exude a musky scent? Somehow, I imagine that when two T. rex got it on, the earth shook for miles around.
And if I could only take this journey, I could answer a question that sometimes bothers me. Did T. rex have a penis? Did he even, as lizards do, have two?

The first time Jose Freeman heard his tribe’s lost language through the crackle of a 70-year-old recording, he cried.

“My ancestors were speaking to me,” said Freeman of the sounds captured when American Indians still inhabited California’s Salinas Valley. “It was like coming home.”

T. Ryan Gregory has written a fantastic introductory paper on Understanding Evolutionary Trees. This is great - Phylogenetic trees are crucial to understanding modern evolutionary biology, but there’s a lot of misunderstandings floating around about them.

Charles Darwin sketched his first evolutionary tree in 1837, and trees have remained a central metaphor in evolutionary biology up to the present. Today, phylogenetics—the science of constructing and evaluating hypotheses about historical patterns of descent in the form of evolutionary trees—has become pervasive within and increasingly outside evolutionary biology. Fostering skills in “tree thinking” is therefore a critical component of biological education.

Conversely, misconceptions about evolutionary trees can be very detrimental to one’s understanding of the patterns and processes that have occurred in the history of life. This paper provides a basic introduction to evolutionary trees, including some guidelines for how and how not to read them. Ten of the most common misconceptions about evolutionary trees and their implications for understanding evolution are addressed.

‘cos it’s Valentines day - Evolution, by Langdon Smith:

When you were a tadpole and I was a fish
In the Paleozoic time,
And side by side on the ebbing tide
We sprawled through the ooze and slime,
Or skittered with many a caudal flip
Through the depths of the Cambrian fen,
My heart was rife with the joy of life,
For I loved you even then.

Mindless we lived and mindless we loved
And mindless at last we died;
And deep in the rift of the Caradoc drift
We slumbered side by side.
The world turned on in the lathe of time,
The hot lands heaved amain,
Till we caught our breath from the womb of death
And crept into light again.

We were amphibians, scaled and tailed,
And drab as a dead man’s hand;
We coiled at ease ‘neath the dripping trees
Or trailed through the mud and sand.
Croaking and blind, with our three-clawed feet
Writing a language dumb,
With never a spark in the empty dark
To hint at a life to come.

Yet happy we lived and happy we loved,
And happy we died once more;
Our forms were rolled in the clinging mold
Of a Neocomian shore.
The eons came and the eons fled
And the sleep that wrapped us fast
Was riven away in a newer day
And the night of death was past.

Then light and swift through the jungle trees
We swung in our airy flights,
Or breathed in the balms of the fronded palms
In the hush of the moonless nights;
And, oh! what beautiful years were there
When our hearts clung each to each;
When life was filled and our senses thrilled
In the first faint dawn of speech.

Thus life by life and love by love
We passed through the cycles strange,
And breath by breath and death by death
We followed the chain of change.
Till there came a time in the law of life
When over the nursing side
The shadows broke and soul awoke
In a strange, dim dream of God.

I was thewed like an Auruch bull
And tusked like the great cave bear;
And you, my sweet, from head to feet
Were gowned in your glorious hair.
Deep in the gloom of a fireless cave,
When the night fell o’er the plain
And the moon hung red o’er the river bed
We mumbled the bones of the slain.

I flaked a flint to a cutting edge
And shaped it with brutish craft;
I broke a shank from the woodland lank
And fitted it, head and haft;
Then I hid me close to the reedy tarn,
Where the mammoth came to drink;
Through the brawn and bone I drove the stone
And slew him upon the brink.

Loud I howled through the moonlit wastes,
Loud answered our kith and kin;
From west and east to the crimson feast
The clan came tramping in.
O’er joint and gristle and padded hoof
We fought and clawed and tore,
And check by jowl with many a growl
We talked the marvel o’er.

I carved that fight on a reindeer bone
With rude and hairy hand;
I pictured his fall on the cavern wall
That men might understand.
For we lived by blood and the right of might
Ere human laws were drawn,
And the age of sin did not begin
Till our brutal tush were gone.

And that was a million years ago
In a time that no man knows;
Yet here tonight in the mellow light
We sit at Delmonico’s.
Your eyes are deep as the Devon springs,
Your hair is dark as jet,
Your years are few, your life is new,
Your soul untried, and yet -

Our trail is on the Kimmeridge clay
And the scarp of the Purbeck flags;
We have left our bones in the Bagshot stones
And deep in the Coralline crags;
Our love is old, our lives are old,
And death shall come amain;
Should it come today, what man may say
We shall not live again?

God wrought our souls from the Tremadoc beds
And furnished them wings to fly;
We sowed our spawn in the world’s dim dawn,
And I know that it shall not die,
Though cities have sprung above the graves
Where the crook-bone men make war
And the oxwain creaks o’er the buried caves
Where the mummied mammoths are.

Then as we linger at luncheon here
O’er many a dainty dish,
Let us drink anew to the time when you
Were a tadpole and I was a fish.

ps: Scientific Valentines day cards.

William Harris in PLoS Biology:

Seymour Benzer was born in 1921 in the South Bronx, New York, the son of Polish Jewish immigrants. He was the only boy in a family that included his three sisters. His friend from later years, the phage biologist Jean Weigle, called Seymour the “egg with two yellows”, an old European expression for a rare event. He went to public schools in Brooklyn like any normal New York City kid, but everything changed when, at 13, a relative gave him a microscope for his Bar Mitzvah. “And that”, Seymour said, “opened up the whole world”. He looked at everything he could find under the microscope, including flies—never imagining the remarkable discoveries he would later make about the way their brains worked.